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Finding the Fourth Proportional to 86,125.53, 129,068.01 and 41,740.50

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Solution

The fourth proportional to 86,125.53, 129,068.01 and 41,740.50 is: 62,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,125.53 : 129,068.01 = 41,740.50 : x
  2. Step 2: Convert to fraction form
    86,125.53/129,068.01 = 41,740.50/x
  3. Step 3: Cross multiply
    86,125.53x = 129,068.01 × 41,740.50
  4. Step 4: Simplify right side
    86,125.53x = 5,387,363,271.41
  5. Step 5: Solve for x
    x = 5,387,363,271.41/86,125.53
  6. Step 6: Final answer
    x = 62,552.45

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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.