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Finding the Fourth Proportional to 609,564.80, 851,291.20 and 609,564.80

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Solution

The fourth proportional to 609,564.80, 851,291.20 and 609,564.80 is: 851,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,564.80 : 851,291.20 = 609,564.80 : x
  2. Step 2: Convert to fraction form
    609,564.80/851,291.20 = 609,564.80/x
  3. Step 3: Cross multiply
    609,564.80x = 851,291.20 × 609,564.80
  4. Step 4: Simplify right side
    609,564.80x = 518,917,150,069.76
  5. Step 5: Solve for x
    x = 518,917,150,069.76/609,564.80
  6. Step 6: Final answer
    x = 851,291.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.