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Finding the Fourth Proportional to 207,275.42, 310,913.28 and 57,515.86

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Solution

The fourth proportional to 207,275.42, 310,913.28 and 57,515.86 is: 86,273.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,275.42 : 310,913.28 = 57,515.86 : x
  2. Step 2: Convert to fraction form
    207,275.42/310,913.28 = 57,515.86/x
  3. Step 3: Cross multiply
    207,275.42x = 310,913.28 × 57,515.86
  4. Step 4: Simplify right side
    207,275.42x = 17,882,444,684.62
  5. Step 5: Solve for x
    x = 17,882,444,684.62/207,275.42
  6. Step 6: Final answer
    x = 86,273.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.