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Finding the Fourth Proportional to 66,598.61, 99,897.91 and 27,158.79

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Solution

The fourth proportional to 66,598.61, 99,897.91 and 27,158.79 is: 40,738.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,598.61 : 99,897.91 = 27,158.79 : x
  2. Step 2: Convert to fraction form
    66,598.61/99,897.91 = 27,158.79/x
  3. Step 3: Cross multiply
    66,598.61x = 99,897.91 × 27,158.79
  4. Step 4: Simplify right side
    66,598.61x = 2,713,106,665.85
  5. Step 5: Solve for x
    x = 2,713,106,665.85/66,598.61
  6. Step 6: Final answer
    x = 40,738.19

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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.