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Finding the Fourth Proportional to 191,358.66, 287,026.47 and 84,711.39

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Solution

The fourth proportional to 191,358.66, 287,026.47 and 84,711.39 is: 127,061.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,358.66 : 287,026.47 = 84,711.39 : x
  2. Step 2: Convert to fraction form
    191,358.66/287,026.47 = 84,711.39/x
  3. Step 3: Cross multiply
    191,358.66x = 287,026.47 × 84,711.39
  4. Step 4: Simplify right side
    191,358.66x = 24,314,411,240.49
  5. Step 5: Solve for x
    x = 24,314,411,240.49/191,358.66
  6. Step 6: Final answer
    x = 127,061.99

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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.