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Finding the Fourth Proportional to 97,712.70, 146,569.05 and 62,720.70

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Solution

The fourth proportional to 97,712.70, 146,569.05 and 62,720.70 is: 94,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,712.70 : 146,569.05 = 62,720.70 : x
  2. Step 2: Convert to fraction form
    97,712.70/146,569.05 = 62,720.70/x
  3. Step 3: Cross multiply
    97,712.70x = 146,569.05 × 62,720.70
  4. Step 4: Simplify right side
    97,712.70x = 9,192,913,414.34
  5. Step 5: Solve for x
    x = 9,192,913,414.34/97,712.70
  6. Step 6: Final answer
    x = 94,081.05

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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.