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Finding the Fourth Proportional to 118,098,679.80, 177,148,019.70 and 89,400,865.80

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Solution

The fourth proportional to 118,098,679.80, 177,148,019.70 and 89,400,865.80 is: 134,101,298.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,098,679.80 : 177,148,019.70 = 89,400,865.80 : x
  2. Step 2: Convert to fraction form
    118,098,679.80/177,148,019.70 = 89,400,865.80/x
  3. Step 3: Cross multiply
    118,098,679.80x = 177,148,019.70 × 89,400,865.80
  4. Step 4: Simplify right side
    118,098,679.80x = 15,837,186,335,935,454
  5. Step 5: Solve for x
    x = 15,837,186,335,935,454/118,098,679.80
  6. Step 6: Final answer
    x = 134,101,298.70

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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.