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Finding the Fourth Proportional to 65,264.76, 90,043.62 and 45,114.36

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Solution

The fourth proportional to 65,264.76, 90,043.62 and 45,114.36 is: 62,242.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,264.76 : 90,043.62 = 45,114.36 : x
  2. Step 2: Convert to fraction form
    65,264.76/90,043.62 = 45,114.36/x
  3. Step 3: Cross multiply
    65,264.76x = 90,043.62 × 45,114.36
  4. Step 4: Simplify right side
    65,264.76x = 4,062,260,288.38
  5. Step 5: Solve for x
    x = 4,062,260,288.38/65,264.76
  6. Step 6: Final answer
    x = 62,242.78

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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.