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Finding the Fourth Proportional to 86,595.78, 129,961.70 and 44,474.16

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Solution

The fourth proportional to 86,595.78, 129,961.70 and 44,474.16 is: 66,746.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,595.78 : 129,961.70 = 44,474.16 : x
  2. Step 2: Convert to fraction form
    86,595.78/129,961.70 = 44,474.16/x
  3. Step 3: Cross multiply
    86,595.78x = 129,961.70 × 44,474.16
  4. Step 4: Simplify right side
    86,595.78x = 5,779,937,439.67
  5. Step 5: Solve for x
    x = 5,779,937,439.67/86,595.78
  6. Step 6: Final answer
    x = 66,746.18

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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.