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Finding the Fourth Proportional to 125,643.86, 173,389.10 and 69,058.88

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Solution

The fourth proportional to 125,643.86, 173,389.10 and 69,058.88 is: 95,301.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,643.86 : 173,389.10 = 69,058.88 : x
  2. Step 2: Convert to fraction form
    125,643.86/173,389.10 = 69,058.88/x
  3. Step 3: Cross multiply
    125,643.86x = 173,389.10 × 69,058.88
  4. Step 4: Simplify right side
    125,643.86x = 11,974,057,050.21
  5. Step 5: Solve for x
    x = 11,974,057,050.21/125,643.86
  6. Step 6: Final answer
    x = 95,301.57

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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.