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Finding the Fourth Proportional to 191,422.60, 286,990.62 and 132,088.84

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Solution

The fourth proportional to 191,422.60, 286,990.62 and 132,088.84 is: 198,034.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,422.60 : 286,990.62 = 132,088.84 : x
  2. Step 2: Convert to fraction form
    191,422.60/286,990.62 = 132,088.84/x
  3. Step 3: Cross multiply
    191,422.60x = 286,990.62 × 132,088.84
  4. Step 4: Simplify right side
    191,422.60x = 37,908,258,086.68
  5. Step 5: Solve for x
    x = 37,908,258,086.68/191,422.60
  6. Step 6: Final answer
    x = 198,034.39

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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.