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Finding the Fourth Proportional to 101,995,269.60, 152,992,904.40 and 86,211,471.90

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Solution

The fourth proportional to 101,995,269.60, 152,992,904.40 and 86,211,471.90 is: 129,317,207.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,995,269.60 : 152,992,904.40 = 86,211,471.90 : x
  2. Step 2: Convert to fraction form
    101,995,269.60/152,992,904.40 = 86,211,471.90/x
  3. Step 3: Cross multiply
    101,995,269.60x = 152,992,904.40 × 86,211,471.90
  4. Step 4: Simplify right side
    101,995,269.60x = 13,189,743,478,579,988
  5. Step 5: Solve for x
    x = 13,189,743,478,579,988/101,995,269.60
  6. Step 6: Final answer
    x = 129,317,207.85

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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.