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Finding the Fourth Proportional to 58,473.35, 87,715.49 and 19,019.87

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Solution

The fourth proportional to 58,473.35, 87,715.49 and 19,019.87 is: 28,531.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,473.35 : 87,715.49 = 19,019.87 : x
  2. Step 2: Convert to fraction form
    58,473.35/87,715.49 = 19,019.87/x
  3. Step 3: Cross multiply
    58,473.35x = 87,715.49 × 19,019.87
  4. Step 4: Simplify right side
    58,473.35x = 1,668,336,683.11
  5. Step 5: Solve for x
    x = 1,668,336,683.11/58,473.35
  6. Step 6: Final answer
    x = 28,531.58

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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.