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Finding the Fourth Proportional to 111,799.64, 154,285.92 and 61,498.64

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Solution

The fourth proportional to 111,799.64, 154,285.92 and 61,498.64 is: 84,869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,799.64 : 154,285.92 = 61,498.64 : x
  2. Step 2: Convert to fraction form
    111,799.64/154,285.92 = 61,498.64/x
  3. Step 3: Cross multiply
    111,799.64x = 154,285.92 × 61,498.64
  4. Step 4: Simplify right side
    111,799.64x = 9,488,374,251.15
  5. Step 5: Solve for x
    x = 9,488,374,251.15/111,799.64
  6. Step 6: Final answer
    x = 84,869.45

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1.5x scale

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.