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Finding the Fourth Proportional to 569,355.11, 785,201.07 and 472,405.40

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Solution

The fourth proportional to 569,355.11, 785,201.07 and 472,405.40 is: 651,497.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,355.11 : 785,201.07 = 472,405.40 : x
  2. Step 2: Convert to fraction form
    569,355.11/785,201.07 = 472,405.40/x
  3. Step 3: Cross multiply
    569,355.11x = 785,201.07 × 472,405.40
  4. Step 4: Simplify right side
    569,355.11x = 370,933,221,627.77
  5. Step 5: Solve for x
    x = 370,933,221,627.77/569,355.11
  6. Step 6: Final answer
    x = 651,497.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.