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Finding the Fourth Proportional to 572,574.90, 858,862.35 and 520,086.90

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Solution

The fourth proportional to 572,574.90, 858,862.35 and 520,086.90 is: 780,130.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,574.90 : 858,862.35 = 520,086.90 : x
  2. Step 2: Convert to fraction form
    572,574.90/858,862.35 = 520,086.90/x
  3. Step 3: Cross multiply
    572,574.90x = 858,862.35 × 520,086.90
  4. Step 4: Simplify right side
    572,574.90x = 446,683,057,138.22
  5. Step 5: Solve for x
    x = 446,683,057,138.22/572,574.90
  6. Step 6: Final answer
    x = 780,130.35

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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.