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Finding the Fourth Proportional to 191,809.53, 287,719.76 and 58,686.84

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Solution

The fourth proportional to 191,809.53, 287,719.76 and 58,686.84 is: 88,031.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,809.53 : 287,719.76 = 58,686.84 : x
  2. Step 2: Convert to fraction form
    191,809.53/287,719.76 = 58,686.84/x
  3. Step 3: Cross multiply
    191,809.53x = 287,719.76 × 58,686.84
  4. Step 4: Simplify right side
    191,809.53x = 16,885,363,519.96
  5. Step 5: Solve for x
    x = 16,885,363,519.96/191,809.53
  6. Step 6: Final answer
    x = 88,031.93

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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.