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Finding the Fourth Proportional to 103,312.65, 154,908.75 and 40,058.88

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Solution

The fourth proportional to 103,312.65, 154,908.75 and 40,058.88 is: 60,064.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,312.65 : 154,908.75 = 40,058.88 : x
  2. Step 2: Convert to fraction form
    103,312.65/154,908.75 = 40,058.88/x
  3. Step 3: Cross multiply
    103,312.65x = 154,908.75 × 40,058.88
  4. Step 4: Simplify right side
    103,312.65x = 6,205,471,027.20
  5. Step 5: Solve for x
    x = 6,205,471,027.20/103,312.65
  6. Step 6: Final answer
    x = 60,064.97

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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.