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Finding the Fourth Proportional to 578,187.10, 866,910.66 and 278,069.95

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Solution

The fourth proportional to 578,187.10, 866,910.66 and 278,069.95 is: 416,926.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,187.10 : 866,910.66 = 278,069.95 : x
  2. Step 2: Convert to fraction form
    578,187.10/866,910.66 = 278,069.95/x
  3. Step 3: Cross multiply
    578,187.10x = 866,910.66 × 278,069.95
  4. Step 4: Simplify right side
    578,187.10x = 241,061,803,880.67
  5. Step 5: Solve for x
    x = 241,061,803,880.67/578,187.10
  6. Step 6: Final answer
    x = 416,926.98

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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.