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Finding the Fourth Proportional to 88,978,885.60, 133,468,328.40 and 71,660,178.40

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Solution

The fourth proportional to 88,978,885.60, 133,468,328.40 and 71,660,178.40 is: 107,490,267.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,978,885.60 : 133,468,328.40 = 71,660,178.40 : x
  2. Step 2: Convert to fraction form
    88,978,885.60/133,468,328.40 = 71,660,178.40/x
  3. Step 3: Cross multiply
    88,978,885.60x = 133,468,328.40 × 71,660,178.40
  4. Step 4: Simplify right side
    88,978,885.60x = 9,564,364,223,893,788
  5. Step 5: Solve for x
    x = 9,564,364,223,893,788/88,978,885.60
  6. Step 6: Final answer
    x = 107,490,267.60

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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.