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Finding the Fourth Proportional to 125,407.64, 173,064.66 and 68,824.28

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Solution

The fourth proportional to 125,407.64, 173,064.66 and 68,824.28 is: 94,978.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,407.64 : 173,064.66 = 68,824.28 : x
  2. Step 2: Convert to fraction form
    125,407.64/173,064.66 = 68,824.28/x
  3. Step 3: Cross multiply
    125,407.64x = 173,064.66 × 68,824.28
  4. Step 4: Simplify right side
    125,407.64x = 11,911,050,617.94
  5. Step 5: Solve for x
    x = 11,911,050,617.94/125,407.64
  6. Step 6: Final answer
    x = 94,978.67

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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.