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Finding the Fourth Proportional to 578,116.40, 866,915.40 and 223,012.40

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Solution

The fourth proportional to 578,116.40, 866,915.40 and 223,012.40 is: 334,418.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,116.40 : 866,915.40 = 223,012.40 : x
  2. Step 2: Convert to fraction form
    578,116.40/866,915.40 = 223,012.40/x
  3. Step 3: Cross multiply
    578,116.40x = 866,915.40 × 223,012.40
  4. Step 4: Simplify right side
    578,116.40x = 193,332,883,950.96
  5. Step 5: Solve for x
    x = 193,332,883,950.96/578,116.40
  6. Step 6: Final answer
    x = 334,418.61

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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.