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Finding the Fourth Proportional to 109,999.78, 151,799.76 and 59,698.78

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Solution

The fourth proportional to 109,999.78, 151,799.76 and 59,698.78 is: 82,384.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,999.78 : 151,799.76 = 59,698.78 : x
  2. Step 2: Convert to fraction form
    109,999.78/151,799.76 = 59,698.78/x
  3. Step 3: Cross multiply
    109,999.78x = 151,799.76 × 59,698.78
  4. Step 4: Simplify right side
    109,999.78x = 9,062,260,476.29
  5. Step 5: Solve for x
    x = 9,062,260,476.29/109,999.78
  6. Step 6: Final answer
    x = 82,384.35

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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.