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Finding the Fourth Proportional to 191,060.99, 286,154.43 and 91,291.31

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Solution

The fourth proportional to 191,060.99, 286,154.43 and 91,291.31 is: 136,728.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,060.99 : 286,154.43 = 91,291.31 : x
  2. Step 2: Convert to fraction form
    191,060.99/286,154.43 = 91,291.31/x
  3. Step 3: Cross multiply
    191,060.99x = 286,154.43 × 91,291.31
  4. Step 4: Simplify right side
    191,060.99x = 26,123,411,346.23
  5. Step 5: Solve for x
    x = 26,123,411,346.23/191,060.99
  6. Step 6: Final answer
    x = 136,728.13

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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.