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Finding the Fourth Proportional to 224,879.32, 310,355.58 and 129,390.04

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Solution

The fourth proportional to 224,879.32, 310,355.58 and 129,390.04 is: 178,570.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,879.32 : 310,355.58 = 129,390.04 : x
  2. Step 2: Convert to fraction form
    224,879.32/310,355.58 = 129,390.04/x
  3. Step 3: Cross multiply
    224,879.32x = 310,355.58 × 129,390.04
  4. Step 4: Simplify right side
    224,879.32x = 40,156,920,910.42
  5. Step 5: Solve for x
    x = 40,156,920,910.42/224,879.32
  6. Step 6: Final answer
    x = 178,570.98

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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.