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Finding the Fourth Proportional to 65,953.79, 91,013.58 and 38,726.24

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Solution

The fourth proportional to 65,953.79, 91,013.58 and 38,726.24 is: 53,440.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,953.79 : 91,013.58 = 38,726.24 : x
  2. Step 2: Convert to fraction form
    65,953.79/91,013.58 = 38,726.24/x
  3. Step 3: Cross multiply
    65,953.79x = 91,013.58 × 38,726.24
  4. Step 4: Simplify right side
    65,953.79x = 3,524,613,969.87
  5. Step 5: Solve for x
    x = 3,524,613,969.87/65,953.79
  6. Step 6: Final answer
    x = 53,440.66

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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.