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Finding the Fourth Proportional to 235,681.86, 325,247.79 and 128,258.82

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Solution

The fourth proportional to 235,681.86, 325,247.79 and 128,258.82 is: 177,000.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,681.86 : 325,247.79 = 128,258.82 : x
  2. Step 2: Convert to fraction form
    235,681.86/325,247.79 = 128,258.82/x
  3. Step 3: Cross multiply
    235,681.86x = 325,247.79 × 128,258.82
  4. Step 4: Simplify right side
    235,681.86x = 41,715,897,753.01
  5. Step 5: Solve for x
    x = 41,715,897,753.01/235,681.86
  6. Step 6: Final answer
    x = 177,000.88

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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.