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Finding the Fourth Proportional to 70,492.12, 97,280.48 and 38,659.12

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Solution

The fourth proportional to 70,492.12, 97,280.48 and 38,659.12 is: 53,350.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,492.12 : 97,280.48 = 38,659.12 : x
  2. Step 2: Convert to fraction form
    70,492.12/97,280.48 = 38,659.12/x
  3. Step 3: Cross multiply
    70,492.12x = 97,280.48 × 38,659.12
  4. Step 4: Simplify right side
    70,492.12x = 3,760,777,749.98
  5. Step 5: Solve for x
    x = 3,760,777,749.98/70,492.12
  6. Step 6: Final answer
    x = 53,350.33

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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.