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Finding the Fourth Proportional to 157,035.20, 216,679.20 and 93,388.64

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Solution

The fourth proportional to 157,035.20, 216,679.20 and 93,388.64 is: 128,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,035.20 : 216,679.20 = 93,388.64 : x
  2. Step 2: Convert to fraction form
    157,035.20/216,679.20 = 93,388.64/x
  3. Step 3: Cross multiply
    157,035.20x = 216,679.20 × 93,388.64
  4. Step 4: Simplify right side
    157,035.20x = 20,235,375,804.29
  5. Step 5: Solve for x
    x = 20,235,375,804.29/157,035.20
  6. Step 6: Final answer
    x = 128,858.85

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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.