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Finding the Fourth Proportional to 70,438.62, 105,658.07 and 17,848.11

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Solution

The fourth proportional to 70,438.62, 105,658.07 and 17,848.11 is: 26,772.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,438.62 : 105,658.07 = 17,848.11 : x
  2. Step 2: Convert to fraction form
    70,438.62/105,658.07 = 17,848.11/x
  3. Step 3: Cross multiply
    70,438.62x = 105,658.07 × 17,848.11
  4. Step 4: Simplify right side
    70,438.62x = 1,885,796,766.51
  5. Step 5: Solve for x
    x = 1,885,796,766.51/70,438.62
  6. Step 6: Final answer
    x = 26,772.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.