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Finding the Fourth Proportional to 78,875,952.70, 118,313,929.05 and 78,875,952.70

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Solution

The fourth proportional to 78,875,952.70, 118,313,929.05 and 78,875,952.70 is: 118,313,929.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,875,952.70 : 118,313,929.05 = 78,875,952.70 : x
  2. Step 2: Convert to fraction form
    78,875,952.70/118,313,929.05 = 78,875,952.70/x
  3. Step 3: Cross multiply
    78,875,952.70x = 118,313,929.05 × 78,875,952.70
  4. Step 4: Simplify right side
    78,875,952.70x = 9,332,123,871,498,956
  5. Step 5: Solve for x
    x = 9,332,123,871,498,956/78,875,952.70
  6. Step 6: Final answer
    x = 118,313,929.05

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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.