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Finding the Fourth Proportional to 191,192.40, 286,387.04 and 91,251.97

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Solution

The fourth proportional to 191,192.40, 286,387.04 and 91,251.97 is: 136,686.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,192.40 : 286,387.04 = 91,251.97 : x
  2. Step 2: Convert to fraction form
    191,192.40/286,387.04 = 91,251.97/x
  3. Step 3: Cross multiply
    191,192.40x = 286,387.04 × 91,251.97
  4. Step 4: Simplify right side
    191,192.40x = 26,133,381,094.63
  5. Step 5: Solve for x
    x = 26,133,381,094.63/191,192.40
  6. Step 6: Final answer
    x = 136,686.30

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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.