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Finding the Fourth Proportional to 70,686.94, 97,548.18 and 40,472.72

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Solution

The fourth proportional to 70,686.94, 97,548.18 and 40,472.72 is: 55,852.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,686.94 : 97,548.18 = 40,472.72 : x
  2. Step 2: Convert to fraction form
    70,686.94/97,548.18 = 40,472.72/x
  3. Step 3: Cross multiply
    70,686.94x = 97,548.18 × 40,472.72
  4. Step 4: Simplify right side
    70,686.94x = 3,948,040,419.52
  5. Step 5: Solve for x
    x = 3,948,040,419.52/70,686.94
  6. Step 6: Final answer
    x = 55,852.48

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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.