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Finding the Fourth Proportional to 86,235,840, 119,005,562.88 and 47,604,672

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Solution

The fourth proportional to 86,235,840, 119,005,562.88 and 47,604,672 is: 65,694,504.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,235,840 : 119,005,562.88 = 47,604,672 : x
  2. Step 2: Convert to fraction form
    86,235,840/119,005,562.88 = 47,604,672/x
  3. Step 3: Cross multiply
    86,235,840x = 119,005,562.88 × 47,604,672
  4. Step 4: Simplify right side
    86,235,840x = 5,665,220,787,077,775
  5. Step 5: Solve for x
    x = 5,665,220,787,077,775/86,235,840
  6. Step 6: Final answer
    x = 65,694,504.59

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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.