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Finding the Fourth Proportional to 519,497.40, 779,246.12 and 414,521.40

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Solution

The fourth proportional to 519,497.40, 779,246.12 and 414,521.40 is: 621,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,497.40 : 779,246.12 = 414,521.40 : x
  2. Step 2: Convert to fraction form
    519,497.40/779,246.12 = 414,521.40/x
  3. Step 3: Cross multiply
    519,497.40x = 779,246.12 × 414,521.40
  4. Step 4: Simplify right side
    519,497.40x = 323,014,192,606.97
  5. Step 5: Solve for x
    x = 323,014,192,606.97/519,497.40
  6. Step 6: Final answer
    x = 621,782.12

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Double scale
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Similar ratio
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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.