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Finding the Fourth Proportional to 191,807.82, 287,712.64 and 58,687.87

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Solution

The fourth proportional to 191,807.82, 287,712.64 and 58,687.87 is: 88,032.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,807.82 : 287,712.64 = 58,687.87 : x
  2. Step 2: Convert to fraction form
    191,807.82/287,712.64 = 58,687.87/x
  3. Step 3: Cross multiply
    191,807.82x = 287,712.64 × 58,687.87
  4. Step 4: Simplify right side
    191,807.82x = 16,885,240,575.11
  5. Step 5: Solve for x
    x = 16,885,240,575.11/191,807.82
  6. Step 6: Final answer
    x = 88,032.08

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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.