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Finding the Fourth Proportional to 70,671.60, 97,526.16 and 38,405.88

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Solution

The fourth proportional to 70,671.60, 97,526.16 and 38,405.88 is: 52,999.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,671.60 : 97,526.16 = 38,405.88 : x
  2. Step 2: Convert to fraction form
    70,671.60/97,526.16 = 38,405.88/x
  3. Step 3: Cross multiply
    70,671.60x = 97,526.16 × 38,405.88
  4. Step 4: Simplify right side
    70,671.60x = 3,745,577,997.82
  5. Step 5: Solve for x
    x = 3,745,577,997.82/70,671.60
  6. Step 6: Final answer
    x = 52,999.76

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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.