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Finding the Fourth Proportional to 228,595.50, 315,388.89 and 148,084.74

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Solution

The fourth proportional to 228,595.50, 315,388.89 and 148,084.74 is: 204,309.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,595.50 : 315,388.89 = 148,084.74 : x
  2. Step 2: Convert to fraction form
    228,595.50/315,388.89 = 148,084.74/x
  3. Step 3: Cross multiply
    228,595.50x = 315,388.89 × 148,084.74
  4. Step 4: Simplify right side
    228,595.50x = 46,704,281,774.54
  5. Step 5: Solve for x
    x = 46,704,281,774.54/228,595.50
  6. Step 6: Final answer
    x = 204,309.72

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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.