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Finding the Fourth Proportional to 680,585.04, 939,175.12 and 374,655.20

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Solution

The fourth proportional to 680,585.04, 939,175.12 and 374,655.20 is: 517,006.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,585.04 : 939,175.12 = 374,655.20 : x
  2. Step 2: Convert to fraction form
    680,585.04/939,175.12 = 374,655.20/x
  3. Step 3: Cross multiply
    680,585.04x = 939,175.12 × 374,655.20
  4. Step 4: Simplify right side
    680,585.04x = 351,866,842,418.62
  5. Step 5: Solve for x
    x = 351,866,842,418.62/680,585.04
  6. Step 6: Final answer
    x = 517,006.43

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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.