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Finding the Fourth Proportional to 58,561.08, 87,838.80 and 19,113

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Solution

The fourth proportional to 58,561.08, 87,838.80 and 19,113 is: 28,668.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,561.08 : 87,838.80 = 19,113 : x
  2. Step 2: Convert to fraction form
    58,561.08/87,838.80 = 19,113/x
  3. Step 3: Cross multiply
    58,561.08x = 87,838.80 × 19,113
  4. Step 4: Simplify right side
    58,561.08x = 1,678,862,984.40
  5. Step 5: Solve for x
    x = 1,678,862,984.40/58,561.08
  6. Step 6: Final answer
    x = 28,668.58

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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.