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Finding the Fourth Proportional to 77,411.70, 116,117.55 and 65,601.90

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Solution

The fourth proportional to 77,411.70, 116,117.55 and 65,601.90 is: 98,402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,411.70 : 116,117.55 = 65,601.90 : x
  2. Step 2: Convert to fraction form
    77,411.70/116,117.55 = 65,601.90/x
  3. Step 3: Cross multiply
    77,411.70x = 116,117.55 × 65,601.90
  4. Step 4: Simplify right side
    77,411.70x = 7,617,531,903.35
  5. Step 5: Solve for x
    x = 7,617,531,903.35/77,411.70
  6. Step 6: Final answer
    x = 98,402.85

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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.