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Finding the Fourth Proportional to 66,240.76, 91,411.35 and 36,025.43

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Solution

The fourth proportional to 66,240.76, 91,411.35 and 36,025.43 is: 49,714.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,240.76 : 91,411.35 = 36,025.43 : x
  2. Step 2: Convert to fraction form
    66,240.76/91,411.35 = 36,025.43/x
  3. Step 3: Cross multiply
    66,240.76x = 91,411.35 × 36,025.43
  4. Step 4: Simplify right side
    66,240.76x = 3,293,132,733.57
  5. Step 5: Solve for x
    x = 3,293,132,733.57/66,240.76
  6. Step 6: Final answer
    x = 49,714.60

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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.