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Finding the Fourth Proportional to 519,887.30, 779,830.95 and 348,645.20

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Solution

The fourth proportional to 519,887.30, 779,830.95 and 348,645.20 is: 522,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,887.30 : 779,830.95 = 348,645.20 : x
  2. Step 2: Convert to fraction form
    519,887.30/779,830.95 = 348,645.20/x
  3. Step 3: Cross multiply
    519,887.30x = 779,830.95 × 348,645.20
  4. Step 4: Simplify right side
    519,887.30x = 271,884,317,528.94
  5. Step 5: Solve for x
    x = 271,884,317,528.94/519,887.30
  6. Step 6: Final answer
    x = 522,967.80

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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.