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Finding the Fourth Proportional to 66,193.60, 99,290.40 and 61,124.80

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Solution

The fourth proportional to 66,193.60, 99,290.40 and 61,124.80 is: 91,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,193.60 : 99,290.40 = 61,124.80 : x
  2. Step 2: Convert to fraction form
    66,193.60/99,290.40 = 61,124.80/x
  3. Step 3: Cross multiply
    66,193.60x = 99,290.40 × 61,124.80
  4. Step 4: Simplify right side
    66,193.60x = 6,069,105,841.92
  5. Step 5: Solve for x
    x = 6,069,105,841.92/66,193.60
  6. Step 6: Final answer
    x = 91,687.20

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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.