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Finding the Fourth Proportional to 691,406.21, 953,801.43 and 462,019.82

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Solution

The fourth proportional to 691,406.21, 953,801.43 and 462,019.82 is: 637,360.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,406.21 : 953,801.43 = 462,019.82 : x
  2. Step 2: Convert to fraction form
    691,406.21/953,801.43 = 462,019.82/x
  3. Step 3: Cross multiply
    691,406.21x = 953,801.43 × 462,019.82
  4. Step 4: Simplify right side
    691,406.21x = 440,675,158,502.76
  5. Step 5: Solve for x
    x = 440,675,158,502.76/691,406.21
  6. Step 6: Final answer
    x = 637,360.72

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Similar ratio
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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.