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Finding the Fourth Proportional to 628,271.25, 866,948.72 and 356,252.19

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Solution

The fourth proportional to 628,271.25, 866,948.72 and 356,252.19 is: 491,590.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,271.25 : 866,948.72 = 356,252.19 : x
  2. Step 2: Convert to fraction form
    628,271.25/866,948.72 = 356,252.19/x
  3. Step 3: Cross multiply
    628,271.25x = 866,948.72 × 356,252.19
  4. Step 4: Simplify right side
    628,271.25x = 308,852,378,336.44
  5. Step 5: Solve for x
    x = 308,852,378,336.44/628,271.25
  6. Step 6: Final answer
    x = 491,590.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.