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Finding the Fourth Proportional to 191,581.20, 287,416.48 and 58,461.20

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Solution

The fourth proportional to 191,581.20, 287,416.48 and 58,461.20 is: 87,705.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,581.20 : 287,416.48 = 58,461.20 : x
  2. Step 2: Convert to fraction form
    191,581.20/287,416.48 = 58,461.20/x
  3. Step 3: Cross multiply
    191,581.20x = 287,416.48 × 58,461.20
  4. Step 4: Simplify right side
    191,581.20x = 16,802,712,320.58
  5. Step 5: Solve for x
    x = 16,802,712,320.58/191,581.20
  6. Step 6: Final answer
    x = 87,705.43

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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.