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Finding the Fourth Proportional to 109,894.64, 151,646.48 and 61,490.14

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Solution

The fourth proportional to 109,894.64, 151,646.48 and 61,490.14 is: 84,851.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,894.64 : 151,646.48 = 61,490.14 : x
  2. Step 2: Convert to fraction form
    109,894.64/151,646.48 = 61,490.14/x
  3. Step 3: Cross multiply
    109,894.64x = 151,646.48 × 61,490.14
  4. Step 4: Simplify right side
    109,894.64x = 9,324,763,285.71
  5. Step 5: Solve for x
    x = 9,324,763,285.71/109,894.64
  6. Step 6: Final answer
    x = 84,851.85

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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.