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Finding the Fourth Proportional to 125,643.76, 173,388.48 and 69,055.12

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Solution

The fourth proportional to 125,643.76, 173,388.48 and 69,055.12 is: 95,296.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,643.76 : 173,388.48 = 69,055.12 : x
  2. Step 2: Convert to fraction form
    125,643.76/173,388.48 = 69,055.12/x
  3. Step 3: Cross multiply
    125,643.76x = 173,388.48 × 69,055.12
  4. Step 4: Simplify right side
    125,643.76x = 11,973,362,293.02
  5. Step 5: Solve for x
    x = 11,973,362,293.02/125,643.76
  6. Step 6: Final answer
    x = 95,296.12

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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.