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Finding the Fourth Proportional to 70,794.59, 97,717.28 and 42,134.40

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Solution

The fourth proportional to 70,794.59, 97,717.28 and 42,134.40 is: 58,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,794.59 : 97,717.28 = 42,134.40 : x
  2. Step 2: Convert to fraction form
    70,794.59/97,717.28 = 42,134.40/x
  3. Step 3: Cross multiply
    70,794.59x = 97,717.28 × 42,134.40
  4. Step 4: Simplify right side
    70,794.59x = 4,117,258,751.76
  5. Step 5: Solve for x
    x = 4,117,258,751.76/70,794.59
  6. Step 6: Final answer
    x = 58,157.82

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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.