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Finding the Fourth Proportional to 66,897.77, 92,243.24 and 42,666.32

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Solution

The fourth proportional to 66,897.77, 92,243.24 and 42,666.32 is: 58,831.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,897.77 : 92,243.24 = 42,666.32 : x
  2. Step 2: Convert to fraction form
    66,897.77/92,243.24 = 42,666.32/x
  3. Step 3: Cross multiply
    66,897.77x = 92,243.24 × 42,666.32
  4. Step 4: Simplify right side
    66,897.77x = 3,935,679,241.13
  5. Step 5: Solve for x
    x = 3,935,679,241.13/66,897.77
  6. Step 6: Final answer
    x = 58,831.25

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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.