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Finding the Fourth Proportional to 70,013.79, 96,624.80 and 39,808.62

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Solution

The fourth proportional to 70,013.79, 96,624.80 and 39,808.62 is: 54,939.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,013.79 : 96,624.80 = 39,808.62 : x
  2. Step 2: Convert to fraction form
    70,013.79/96,624.80 = 39,808.62/x
  3. Step 3: Cross multiply
    70,013.79x = 96,624.80 × 39,808.62
  4. Step 4: Simplify right side
    70,013.79x = 3,846,499,746.73
  5. Step 5: Solve for x
    x = 3,846,499,746.73/70,013.79
  6. Step 6: Final answer
    x = 54,939.17

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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.