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Finding the Fourth Proportional to 70,656.32, 97,431.76 and 52,722.88

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Solution

The fourth proportional to 70,656.32, 97,431.76 and 52,722.88 is: 72,702.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,656.32 : 97,431.76 = 52,722.88 : x
  2. Step 2: Convert to fraction form
    70,656.32/97,431.76 = 52,722.88/x
  3. Step 3: Cross multiply
    70,656.32x = 97,431.76 × 52,722.88
  4. Step 4: Simplify right side
    70,656.32x = 5,136,882,990.67
  5. Step 5: Solve for x
    x = 5,136,882,990.67/70,656.32
  6. Step 6: Final answer
    x = 72,702.39

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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.