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Finding the Fourth Proportional to 109,700.64, 151,387.16 and 59,399.64

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Solution

The fourth proportional to 109,700.64, 151,387.16 and 59,399.64 is: 81,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,700.64 : 151,387.16 = 59,399.64 : x
  2. Step 2: Convert to fraction form
    109,700.64/151,387.16 = 59,399.64/x
  3. Step 3: Cross multiply
    109,700.64x = 151,387.16 × 59,399.64
  4. Step 4: Simplify right side
    109,700.64x = 8,992,342,507.62
  5. Step 5: Solve for x
    x = 8,992,342,507.62/109,700.64
  6. Step 6: Final answer
    x = 81,971.65

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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.