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Finding the Fourth Proportional to 115,473.72, 159,344.65 and 64,482.47

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Solution

The fourth proportional to 115,473.72, 159,344.65 and 64,482.47 is: 88,980.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,473.72 : 159,344.65 = 64,482.47 : x
  2. Step 2: Convert to fraction form
    115,473.72/159,344.65 = 64,482.47/x
  3. Step 3: Cross multiply
    115,473.72x = 159,344.65 × 64,482.47
  4. Step 4: Simplify right side
    115,473.72x = 10,274,936,613.29
  5. Step 5: Solve for x
    x = 10,274,936,613.29/115,473.72
  6. Step 6: Final answer
    x = 88,980.74

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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.