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Finding the Fourth Proportional to 519,889.30, 779,833.95 and 348,647.20

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Solution

The fourth proportional to 519,889.30, 779,833.95 and 348,647.20 is: 522,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,889.30 : 779,833.95 = 348,647.20 : x
  2. Step 2: Convert to fraction form
    519,889.30/779,833.95 = 348,647.20/x
  3. Step 3: Cross multiply
    519,889.30x = 779,833.95 × 348,647.20
  4. Step 4: Simplify right side
    519,889.30x = 271,886,923,132.44
  5. Step 5: Solve for x
    x = 271,886,923,132.44/519,889.30
  6. Step 6: Final answer
    x = 522,970.80

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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.