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Finding the Fourth Proportional to 572,507,984.30, 858,761,976.45 and 572,507,984.30

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Solution

The fourth proportional to 572,507,984.30, 858,761,976.45 and 572,507,984.30 is: 858,761,976.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,507,984.30 : 858,761,976.45 = 572,507,984.30 : x
  2. Step 2: Convert to fraction form
    572,507,984.30/858,761,976.45 = 572,507,984.30/x
  3. Step 3: Cross multiply
    572,507,984.30x = 858,761,976.45 × 572,507,984.30
  4. Step 4: Simplify right side
    572,507,984.30x = 491,648,088,130,873,536
  5. Step 5: Solve for x
    x = 491,648,088,130,873,536/572,507,984.30
  6. Step 6: Final answer
    x = 858,761,976.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.