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Finding the Fourth Proportional to 56,143.91, 84,197.62 and 18,693.92

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Solution

The fourth proportional to 56,143.91, 84,197.62 and 18,693.92 is: 28,034.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,143.91 : 84,197.62 = 18,693.92 : x
  2. Step 2: Convert to fraction form
    56,143.91/84,197.62 = 18,693.92/x
  3. Step 3: Cross multiply
    56,143.91x = 84,197.62 × 18,693.92
  4. Step 4: Simplify right side
    56,143.91x = 1,573,983,572.47
  5. Step 5: Solve for x
    x = 1,573,983,572.47/56,143.91
  6. Step 6: Final answer
    x = 28,034.81

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1.5x scale

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.