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Finding the Fourth Proportional to 86,038.56, 118,744.80 and 48,314.88

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Solution

The fourth proportional to 86,038.56, 118,744.80 and 48,314.88 is: 66,681.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,038.56 : 118,744.80 = 48,314.88 : x
  2. Step 2: Convert to fraction form
    86,038.56/118,744.80 = 48,314.88/x
  3. Step 3: Cross multiply
    86,038.56x = 118,744.80 × 48,314.88
  4. Step 4: Simplify right side
    86,038.56x = 5,737,140,762.62
  5. Step 5: Solve for x
    x = 5,737,140,762.62/86,038.56
  6. Step 6: Final answer
    x = 66,681.04

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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.