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Finding the Fourth Proportional to 66,373.92, 91,525.68 and 42,501.60

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Solution

The fourth proportional to 66,373.92, 91,525.68 and 42,501.60 is: 58,607.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,373.92 : 91,525.68 = 42,501.60 : x
  2. Step 2: Convert to fraction form
    66,373.92/91,525.68 = 42,501.60/x
  3. Step 3: Cross multiply
    66,373.92x = 91,525.68 × 42,501.60
  4. Step 4: Simplify right side
    66,373.92x = 3,889,987,841.09
  5. Step 5: Solve for x
    x = 3,889,987,841.09/66,373.92
  6. Step 6: Final answer
    x = 58,607.17

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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.