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Finding the Fourth Proportional to 638,841.80, 957,917.10 and 264,902.60

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Solution

The fourth proportional to 638,841.80, 957,917.10 and 264,902.60 is: 397,210.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,841.80 : 957,917.10 = 264,902.60 : x
  2. Step 2: Convert to fraction form
    638,841.80/957,917.10 = 264,902.60/x
  3. Step 3: Cross multiply
    638,841.80x = 957,917.10 × 264,902.60
  4. Step 4: Simplify right side
    638,841.80x = 253,754,730,374.46
  5. Step 5: Solve for x
    x = 253,754,730,374.46/638,841.80
  6. Step 6: Final answer
    x = 397,210.59

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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.