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Finding the Fourth Proportional to 66,248.76, 91,429.74 and 49,452.60

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Solution

The fourth proportional to 66,248.76, 91,429.74 and 49,452.60 is: 68,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,248.76 : 91,429.74 = 49,452.60 : x
  2. Step 2: Convert to fraction form
    66,248.76/91,429.74 = 49,452.60/x
  3. Step 3: Cross multiply
    66,248.76x = 91,429.74 × 49,452.60
  4. Step 4: Simplify right side
    66,248.76x = 4,521,438,360.32
  5. Step 5: Solve for x
    x = 4,521,438,360.32/66,248.76
  6. Step 6: Final answer
    x = 68,249.40

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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.