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Finding the Fourth Proportional to 88,706,009.20, 133,059,013.80 and 75,716,978.80

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Solution

The fourth proportional to 88,706,009.20, 133,059,013.80 and 75,716,978.80 is: 113,575,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,706,009.20 : 133,059,013.80 = 75,716,978.80 : x
  2. Step 2: Convert to fraction form
    88,706,009.20/133,059,013.80 = 75,716,978.80/x
  3. Step 3: Cross multiply
    88,706,009.20x = 133,059,013.80 × 75,716,978.80
  4. Step 4: Simplify right side
    88,706,009.20x = 10,074,826,527,043,506
  5. Step 5: Solve for x
    x = 10,074,826,527,043,506/88,706,009.20
  6. Step 6: Final answer
    x = 113,575,468.20

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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.