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Finding the Fourth Proportional to 519,889.80, 779,834.70 and 348,647.70

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Solution

The fourth proportional to 519,889.80, 779,834.70 and 348,647.70 is: 522,971.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,889.80 : 779,834.70 = 348,647.70 : x
  2. Step 2: Convert to fraction form
    519,889.80/779,834.70 = 348,647.70/x
  3. Step 3: Cross multiply
    519,889.80x = 779,834.70 × 348,647.70
  4. Step 4: Simplify right side
    519,889.80x = 271,887,574,535.19
  5. Step 5: Solve for x
    x = 271,887,574,535.19/519,889.80
  6. Step 6: Final answer
    x = 522,971.55

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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.