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Finding the Fourth Proportional to 58,487.70, 80,618.23 and 45,718.32

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Solution

The fourth proportional to 58,487.70, 80,618.23 and 45,718.32 is: 63,017.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,487.70 : 80,618.23 = 45,718.32 : x
  2. Step 2: Convert to fraction form
    58,487.70/80,618.23 = 45,718.32/x
  3. Step 3: Cross multiply
    58,487.70x = 80,618.23 × 45,718.32
  4. Step 4: Simplify right side
    58,487.70x = 3,685,729,405.29
  5. Step 5: Solve for x
    x = 3,685,729,405.29/58,487.70
  6. Step 6: Final answer
    x = 63,017.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.