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Finding the Fourth Proportional to 191,385.99, 286,892.73 and 91,520.28

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Solution

The fourth proportional to 191,385.99, 286,892.73 and 91,520.28 is: 137,191.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,385.99 : 286,892.73 = 91,520.28 : x
  2. Step 2: Convert to fraction form
    191,385.99/286,892.73 = 91,520.28/x
  3. Step 3: Cross multiply
    191,385.99x = 286,892.73 × 91,520.28
  4. Step 4: Simplify right side
    191,385.99x = 26,256,502,979.56
  5. Step 5: Solve for x
    x = 26,256,502,979.56/191,385.99
  6. Step 6: Final answer
    x = 137,191.35

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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.