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Finding the Fourth Proportional to 58,681.86, 87,996.66 and 18,693.47

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Solution

The fourth proportional to 58,681.86, 87,996.66 and 18,693.47 is: 28,031.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,681.86 : 87,996.66 = 18,693.47 : x
  2. Step 2: Convert to fraction form
    58,681.86/87,996.66 = 18,693.47/x
  3. Step 3: Cross multiply
    58,681.86x = 87,996.66 × 18,693.47
  4. Step 4: Simplify right side
    58,681.86x = 1,644,962,923.81
  5. Step 5: Solve for x
    x = 1,644,962,923.81/58,681.86
  6. Step 6: Final answer
    x = 28,031.88

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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.