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Finding the Fourth Proportional to 468,078.40, 702,117.60 and 413,840.80

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Solution

The fourth proportional to 468,078.40, 702,117.60 and 413,840.80 is: 620,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,078.40 : 702,117.60 = 413,840.80 : x
  2. Step 2: Convert to fraction form
    468,078.40/702,117.60 = 413,840.80/x
  3. Step 3: Cross multiply
    468,078.40x = 702,117.60 × 413,840.80
  4. Step 4: Simplify right side
    468,078.40x = 290,564,909,278.08
  5. Step 5: Solve for x
    x = 290,564,909,278.08/468,078.40
  6. Step 6: Final answer
    x = 620,761.20

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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.