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Finding the Fourth Proportional to 65,717.55, 90,690.12 and 37,423.24

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Solution

The fourth proportional to 65,717.55, 90,690.12 and 37,423.24 is: 51,644.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,717.55 : 90,690.12 = 37,423.24 : x
  2. Step 2: Convert to fraction form
    65,717.55/90,690.12 = 37,423.24/x
  3. Step 3: Cross multiply
    65,717.55x = 90,690.12 × 37,423.24
  4. Step 4: Simplify right side
    65,717.55x = 3,393,917,899.66
  5. Step 5: Solve for x
    x = 3,393,917,899.66/65,717.55
  6. Step 6: Final answer
    x = 51,644.01

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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.