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Finding the Fourth Proportional to 111,959.68, 154,518.96 and 64,203.70

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Solution

The fourth proportional to 111,959.68, 154,518.96 and 64,203.70 is: 88,609.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,959.68 : 154,518.96 = 64,203.70 : x
  2. Step 2: Convert to fraction form
    111,959.68/154,518.96 = 64,203.70/x
  3. Step 3: Cross multiply
    111,959.68x = 154,518.96 × 64,203.70
  4. Step 4: Simplify right side
    111,959.68x = 9,920,688,952.15
  5. Step 5: Solve for x
    x = 9,920,688,952.15/111,959.68
  6. Step 6: Final answer
    x = 88,609.48

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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.