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Finding the Fourth Proportional to 58,708.18, 88,065.06 and 18,731.40

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Solution

The fourth proportional to 58,708.18, 88,065.06 and 18,731.40 is: 28,097.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,708.18 : 88,065.06 = 18,731.40 : x
  2. Step 2: Convert to fraction form
    58,708.18/88,065.06 = 18,731.40/x
  3. Step 3: Cross multiply
    58,708.18x = 88,065.06 × 18,731.40
  4. Step 4: Simplify right side
    58,708.18x = 1,649,581,424.56
  5. Step 5: Solve for x
    x = 1,649,581,424.56/58,708.18
  6. Step 6: Final answer
    x = 28,097.98

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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.