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Finding the Fourth Proportional to 691,040.40, 953,354.85 and 458,576.97

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Solution

The fourth proportional to 691,040.40, 953,354.85 and 458,576.97 is: 632,649.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,040.40 : 953,354.85 = 458,576.97 : x
  2. Step 2: Convert to fraction form
    691,040.40/953,354.85 = 458,576.97/x
  3. Step 3: Cross multiply
    691,040.40x = 953,354.85 × 458,576.97
  4. Step 4: Simplify right side
    691,040.40x = 437,186,578,447.80
  5. Step 5: Solve for x
    x = 437,186,578,447.80/691,040.40
  6. Step 6: Final answer
    x = 632,649.81

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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.