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Finding the Fourth Proportional to 578,190.10, 866,915.16 and 278,072.95

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Solution

The fourth proportional to 578,190.10, 866,915.16 and 278,072.95 is: 416,931.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,190.10 : 866,915.16 = 278,072.95 : x
  2. Step 2: Convert to fraction form
    578,190.10/866,915.16 = 278,072.95/x
  3. Step 3: Cross multiply
    578,190.10x = 866,915.16 × 278,072.95
  4. Step 4: Simplify right side
    578,190.10x = 241,065,655,940.92
  5. Step 5: Solve for x
    x = 241,065,655,940.92/578,190.10
  6. Step 6: Final answer
    x = 416,931.48

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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.