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Finding the Fourth Proportional to 70,654.88, 97,503.81 and 38,825.66

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Solution

The fourth proportional to 70,654.88, 97,503.81 and 38,825.66 is: 53,579.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,654.88 : 97,503.81 = 38,825.66 : x
  2. Step 2: Convert to fraction form
    70,654.88/97,503.81 = 38,825.66/x
  3. Step 3: Cross multiply
    70,654.88x = 97,503.81 × 38,825.66
  4. Step 4: Simplify right side
    70,654.88x = 3,785,649,775.76
  5. Step 5: Solve for x
    x = 3,785,649,775.76/70,654.88
  6. Step 6: Final answer
    x = 53,579.45

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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.