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Finding the Fourth Proportional to 191,257.80, 286,886.70 and 115,150.20

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Solution

The fourth proportional to 191,257.80, 286,886.70 and 115,150.20 is: 172,725.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,257.80 : 286,886.70 = 115,150.20 : x
  2. Step 2: Convert to fraction form
    191,257.80/286,886.70 = 115,150.20/x
  3. Step 3: Cross multiply
    191,257.80x = 286,886.70 × 115,150.20
  4. Step 4: Simplify right side
    191,257.80x = 33,035,060,882.34
  5. Step 5: Solve for x
    x = 33,035,060,882.34/191,257.80
  6. Step 6: Final answer
    x = 172,725.30

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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.