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Finding the Fourth Proportional to 62,085.76, 85,491.84 and 55,612.48

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Solution

The fourth proportional to 62,085.76, 85,491.84 and 55,612.48 is: 76,578.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,085.76 : 85,491.84 = 55,612.48 : x
  2. Step 2: Convert to fraction form
    62,085.76/85,491.84 = 55,612.48/x
  3. Step 3: Cross multiply
    62,085.76x = 85,491.84 × 55,612.48
  4. Step 4: Simplify right side
    62,085.76x = 4,754,413,242.16
  5. Step 5: Solve for x
    x = 4,754,413,242.16/62,085.76
  6. Step 6: Final answer
    x = 76,578.16

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1.5x scale

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.