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Finding the Fourth Proportional to 637,986.40, 956,104.80 and 519,888.40

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Solution

The fourth proportional to 637,986.40, 956,104.80 and 519,888.40 is: 779,119.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,986.40 : 956,104.80 = 519,888.40 : x
  2. Step 2: Convert to fraction form
    637,986.40/956,104.80 = 519,888.40/x
  3. Step 3: Cross multiply
    637,986.40x = 956,104.80 × 519,888.40
  4. Step 4: Simplify right side
    637,986.40x = 497,067,794,704.32
  5. Step 5: Solve for x
    x = 497,067,794,704.32/637,986.40
  6. Step 6: Final answer
    x = 779,119.73

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.