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Finding the Fourth Proportional to 70,775.70, 97,670.10 and 38,944.48

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Solution

The fourth proportional to 70,775.70, 97,670.10 and 38,944.48 is: 53,743.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,775.70 : 97,670.10 = 38,944.48 : x
  2. Step 2: Convert to fraction form
    70,775.70/97,670.10 = 38,944.48/x
  3. Step 3: Cross multiply
    70,775.70x = 97,670.10 × 38,944.48
  4. Step 4: Simplify right side
    70,775.70x = 3,803,711,256.05
  5. Step 5: Solve for x
    x = 3,803,711,256.05/70,775.70
  6. Step 6: Final answer
    x = 53,743.18

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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.