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Finding the Fourth Proportional to 70,451.65, 97,227.80 and 38,620.63

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Solution

The fourth proportional to 70,451.65, 97,227.80 and 38,620.63 is: 53,298.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,451.65 : 97,227.80 = 38,620.63 : x
  2. Step 2: Convert to fraction form
    70,451.65/97,227.80 = 38,620.63/x
  3. Step 3: Cross multiply
    70,451.65x = 97,227.80 × 38,620.63
  4. Step 4: Simplify right side
    70,451.65x = 3,754,998,889.51
  5. Step 5: Solve for x
    x = 3,754,998,889.51/70,451.65
  6. Step 6: Final answer
    x = 53,298.95

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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.