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Finding the Fourth Proportional to 185,882.42, 278,449.41 and 85,904.93

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Solution

The fourth proportional to 185,882.42, 278,449.41 and 85,904.93 is: 128,684.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,882.42 : 278,449.41 = 85,904.93 : x
  2. Step 2: Convert to fraction form
    185,882.42/278,449.41 = 85,904.93/x
  3. Step 3: Cross multiply
    185,882.42x = 278,449.41 × 85,904.93
  4. Step 4: Simplify right side
    185,882.42x = 23,920,177,074.59
  5. Step 5: Solve for x
    x = 23,920,177,074.59/185,882.42
  6. Step 6: Final answer
    x = 128,684.45

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1.5x scale

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.