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Finding the Fourth Proportional to 191,885.40, 287,825.40 and 86,704.20

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Solution

The fourth proportional to 191,885.40, 287,825.40 and 86,704.20 is: 130,055.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,885.40 : 287,825.40 = 86,704.20 : x
  2. Step 2: Convert to fraction form
    191,885.40/287,825.40 = 86,704.20/x
  3. Step 3: Cross multiply
    191,885.40x = 287,825.40 × 86,704.20
  4. Step 4: Simplify right side
    191,885.40x = 24,955,671,046.68
  5. Step 5: Solve for x
    x = 24,955,671,046.68/191,885.40
  6. Step 6: Final answer
    x = 130,055.08

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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.