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Finding the Fourth Proportional to 144,856.85, 216,993.68 and 74,775.65

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Solution

The fourth proportional to 144,856.85, 216,993.68 and 74,775.65 is: 112,012.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,856.85 : 216,993.68 = 74,775.65 : x
  2. Step 2: Convert to fraction form
    144,856.85/216,993.68 = 74,775.65/x
  3. Step 3: Cross multiply
    144,856.85x = 216,993.68 × 74,775.65
  4. Step 4: Simplify right side
    144,856.85x = 16,225,843,094.01
  5. Step 5: Solve for x
    x = 16,225,843,094.01/144,856.85
  6. Step 6: Final answer
    x = 112,012.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.