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Finding the Fourth Proportional to 519,817.80, 779,337.90 and 283,427.40

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Solution

The fourth proportional to 519,817.80, 779,337.90 and 283,427.40 is: 424,929.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,817.80 : 779,337.90 = 283,427.40 : x
  2. Step 2: Convert to fraction form
    519,817.80/779,337.90 = 283,427.40/x
  3. Step 3: Cross multiply
    519,817.80x = 779,337.90 × 283,427.40
  4. Step 4: Simplify right side
    519,817.80x = 220,885,714,718.46
  5. Step 5: Solve for x
    x = 220,885,714,718.46/519,817.80
  6. Step 6: Final answer
    x = 424,929.11

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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.