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Finding the Fourth Proportional to 578,840.80, 868,390.80 and 223,823.20

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Solution

The fourth proportional to 578,840.80, 868,390.80 and 223,823.20 is: 335,784.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,840.80 : 868,390.80 = 223,823.20 : x
  2. Step 2: Convert to fraction form
    578,840.80/868,390.80 = 223,823.20/x
  3. Step 3: Cross multiply
    578,840.80x = 868,390.80 × 223,823.20
  4. Step 4: Simplify right side
    578,840.80x = 194,366,007,706.56
  5. Step 5: Solve for x
    x = 194,366,007,706.56/578,840.80
  6. Step 6: Final answer
    x = 335,784.91

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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.