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Finding the Fourth Proportional to 62,391.60, 86,075.88 and 38,476.80

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Solution

The fourth proportional to 62,391.60, 86,075.88 and 38,476.80 is: 53,082.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,391.60 : 86,075.88 = 38,476.80 : x
  2. Step 2: Convert to fraction form
    62,391.60/86,075.88 = 38,476.80/x
  3. Step 3: Cross multiply
    62,391.60x = 86,075.88 × 38,476.80
  4. Step 4: Simplify right side
    62,391.60x = 3,311,924,419.58
  5. Step 5: Solve for x
    x = 3,311,924,419.58/62,391.60
  6. Step 6: Final answer
    x = 53,082.86

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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.