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Finding the Fourth Proportional to 191,191.84, 286,925.28 and 71,265.28

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Solution

The fourth proportional to 191,191.84, 286,925.28 and 71,265.28 is: 106,949.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,191.84 : 286,925.28 = 71,265.28 : x
  2. Step 2: Convert to fraction form
    191,191.84/286,925.28 = 71,265.28/x
  3. Step 3: Cross multiply
    191,191.84x = 286,925.28 × 71,265.28
  4. Step 4: Simplify right side
    191,191.84x = 20,447,810,418.28
  5. Step 5: Solve for x
    x = 20,447,810,418.28/191,191.84
  6. Step 6: Final answer
    x = 106,949.18

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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.