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Finding the Fourth Proportional to 67,415,866.60, 101,123,799.90 and 66,744,020.20

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Solution

The fourth proportional to 67,415,866.60, 101,123,799.90 and 66,744,020.20 is: 100,116,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,415,866.60 : 101,123,799.90 = 66,744,020.20 : x
  2. Step 2: Convert to fraction form
    67,415,866.60/101,123,799.90 = 66,744,020.20/x
  3. Step 3: Cross multiply
    67,415,866.60x = 101,123,799.90 × 66,744,020.20
  4. Step 4: Simplify right side
    67,415,866.60x = 6,749,408,943,226,359
  5. Step 5: Solve for x
    x = 6,749,408,943,226,359/67,415,866.60
  6. Step 6: Final answer
    x = 100,116,030.30

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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.