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Finding the Fourth Proportional to 567,627.40, 851,441.10 and 515,139.40

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Solution

The fourth proportional to 567,627.40, 851,441.10 and 515,139.40 is: 772,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,627.40 : 851,441.10 = 515,139.40 : x
  2. Step 2: Convert to fraction form
    567,627.40/851,441.10 = 515,139.40/x
  3. Step 3: Cross multiply
    567,627.40x = 851,441.10 × 515,139.40
  4. Step 4: Simplify right side
    567,627.40x = 438,610,857,389.34
  5. Step 5: Solve for x
    x = 438,610,857,389.34/567,627.40
  6. Step 6: Final answer
    x = 772,709.10

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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.