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Finding the Fourth Proportional to 691,339.74, 953,508.02 and 449,699.51

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Solution

The fourth proportional to 691,339.74, 953,508.02 and 449,699.51 is: 620,233.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,339.74 : 953,508.02 = 449,699.51 : x
  2. Step 2: Convert to fraction form
    691,339.74/953,508.02 = 449,699.51/x
  3. Step 3: Cross multiply
    691,339.74x = 953,508.02 × 449,699.51
  4. Step 4: Simplify right side
    691,339.74x = 428,792,082,359.03
  5. Step 5: Solve for x
    x = 428,792,082,359.03/691,339.74
  6. Step 6: Final answer
    x = 620,233.52

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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.