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Finding the Fourth Proportional to 578,190.04, 866,915.16 and 278,072.92

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Solution

The fourth proportional to 578,190.04, 866,915.16 and 278,072.92 is: 416,931.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,190.04 : 866,915.16 = 278,072.92 : x
  2. Step 2: Convert to fraction form
    578,190.04/866,915.16 = 278,072.92/x
  3. Step 3: Cross multiply
    578,190.04x = 866,915.16 × 278,072.92
  4. Step 4: Simplify right side
    578,190.04x = 241,065,629,933.47
  5. Step 5: Solve for x
    x = 241,065,629,933.47/578,190.04
  6. Step 6: Final answer
    x = 416,931.48

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Double scale
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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.