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Finding the Fourth Proportional to 125,388.72, 173,037.60 and 68,802.12

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Solution

The fourth proportional to 125,388.72, 173,037.60 and 68,802.12 is: 94,947.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,388.72 : 173,037.60 = 68,802.12 : x
  2. Step 2: Convert to fraction form
    125,388.72/173,037.60 = 68,802.12/x
  3. Step 3: Cross multiply
    125,388.72x = 173,037.60 × 68,802.12
  4. Step 4: Simplify right side
    125,388.72x = 11,905,353,719.71
  5. Step 5: Solve for x
    x = 11,905,353,719.71/125,388.72
  6. Step 6: Final answer
    x = 94,947.57

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1.5x scale

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.