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Finding the Fourth Proportional to 70,952.66, 97,915.33 and 39,122.70

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Solution

The fourth proportional to 70,952.66, 97,915.33 and 39,122.70 is: 53,989.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,952.66 : 97,915.33 = 39,122.70 : x
  2. Step 2: Convert to fraction form
    70,952.66/97,915.33 = 39,122.70/x
  3. Step 3: Cross multiply
    70,952.66x = 97,915.33 × 39,122.70
  4. Step 4: Simplify right side
    70,952.66x = 3,830,711,762.71
  5. Step 5: Solve for x
    x = 3,830,711,762.71/70,952.66
  6. Step 6: Final answer
    x = 53,989.69

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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.