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Finding the Fourth Proportional to 70,092,030.60, 105,138,045.90 and 45,905,560.20

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Solution

The fourth proportional to 70,092,030.60, 105,138,045.90 and 45,905,560.20 is: 68,858,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,092,030.60 : 105,138,045.90 = 45,905,560.20 : x
  2. Step 2: Convert to fraction form
    70,092,030.60/105,138,045.90 = 45,905,560.20/x
  3. Step 3: Cross multiply
    70,092,030.60x = 105,138,045.90 × 45,905,560.20
  4. Step 4: Simplify right side
    70,092,030.60x = 4,826,420,895,372,814
  5. Step 5: Solve for x
    x = 4,826,420,895,372,814/70,092,030.60
  6. Step 6: Final answer
    x = 68,858,340.30

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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.