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Finding the Fourth Proportional to 626,959.20, 865,400.40 and 400,605.60

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Solution

The fourth proportional to 626,959.20, 865,400.40 and 400,605.60 is: 552,961.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,959.20 : 865,400.40 = 400,605.60 : x
  2. Step 2: Convert to fraction form
    626,959.20/865,400.40 = 400,605.60/x
  3. Step 3: Cross multiply
    626,959.20x = 865,400.40 × 400,605.60
  4. Step 4: Simplify right side
    626,959.20x = 346,684,246,482.24
  5. Step 5: Solve for x
    x = 346,684,246,482.24/626,959.20
  6. Step 6: Final answer
    x = 552,961.42

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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.