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Finding the Fourth Proportional to 58,459.92, 87,711.72 and 30,362.40

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Solution

The fourth proportional to 58,459.92, 87,711.72 and 30,362.40 is: 45,554.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,459.92 : 87,711.72 = 30,362.40 : x
  2. Step 2: Convert to fraction form
    58,459.92/87,711.72 = 30,362.40/x
  3. Step 3: Cross multiply
    58,459.92x = 87,711.72 × 30,362.40
  4. Step 4: Simplify right side
    58,459.92x = 2,663,138,327.33
  5. Step 5: Solve for x
    x = 2,663,138,327.33/58,459.92
  6. Step 6: Final answer
    x = 45,554.94

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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.