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Finding the Fourth Proportional to 58,456.16, 87,723.08 and 21,520.16

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Solution

The fourth proportional to 58,456.16, 87,723.08 and 21,520.16 is: 32,294.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,456.16 : 87,723.08 = 21,520.16 : x
  2. Step 2: Convert to fraction form
    58,456.16/87,723.08 = 21,520.16/x
  3. Step 3: Cross multiply
    58,456.16x = 87,723.08 × 21,520.16
  4. Step 4: Simplify right side
    58,456.16x = 1,887,814,717.29
  5. Step 5: Solve for x
    x = 1,887,814,717.29/58,456.16
  6. Step 6: Final answer
    x = 32,294.54

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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.