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Finding the Fourth Proportional to 64,889,366.88, 89,541,200.88 and 38,778,686.40

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Solution

The fourth proportional to 64,889,366.88, 89,541,200.88 and 38,778,686.40 is: 53,510,926.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,889,366.88 : 89,541,200.88 = 38,778,686.40 : x
  2. Step 2: Convert to fraction form
    64,889,366.88/89,541,200.88 = 38,778,686.40/x
  3. Step 3: Cross multiply
    64,889,366.88x = 89,541,200.88 × 38,778,686.40
  4. Step 4: Simplify right side
    64,889,366.88x = 3,472,290,148,804,923.50
  5. Step 5: Solve for x
    x = 3,472,290,148,804,923.50/64,889,366.88
  6. Step 6: Final answer
    x = 53,510,926.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.