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Finding the Fourth Proportional to 38,998,584.88, 53,818,034.88 and 21,594,925.49

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Solution

The fourth proportional to 38,998,584.88, 53,818,034.88 and 21,594,925.49 is: 29,800,990.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,998,584.88 : 53,818,034.88 = 21,594,925.49 : x
  2. Step 2: Convert to fraction form
    38,998,584.88/53,818,034.88 = 21,594,925.49/x
  3. Step 3: Cross multiply
    38,998,584.88x = 53,818,034.88 × 21,594,925.49
  4. Step 4: Simplify right side
    38,998,584.88x = 1,162,196,453,063,711.75
  5. Step 5: Solve for x
    x = 1,162,196,453,063,711.75/38,998,584.88
  6. Step 6: Final answer
    x = 29,800,990.39

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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.