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Finding the Fourth Proportional to 70,637.70, 97,480.06 and 38,808.65

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Solution

The fourth proportional to 70,637.70, 97,480.06 and 38,808.65 is: 53,555.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,637.70 : 97,480.06 = 38,808.65 : x
  2. Step 2: Convert to fraction form
    70,637.70/97,480.06 = 38,808.65/x
  3. Step 3: Cross multiply
    70,637.70x = 97,480.06 × 38,808.65
  4. Step 4: Simplify right side
    70,637.70x = 3,783,069,677.20
  5. Step 5: Solve for x
    x = 3,783,069,677.20/70,637.70
  6. Step 6: Final answer
    x = 53,555.95

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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.