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Finding the Fourth Proportional to 519,199.90, 778,799.85 and 219,602.77

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Solution

The fourth proportional to 519,199.90, 778,799.85 and 219,602.77 is: 329,404.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,199.90 : 778,799.85 = 219,602.77 : x
  2. Step 2: Convert to fraction form
    519,199.90/778,799.85 = 219,602.77/x
  3. Step 3: Cross multiply
    519,199.90x = 778,799.85 × 219,602.77
  4. Step 4: Simplify right side
    519,199.90x = 171,026,604,335.58
  5. Step 5: Solve for x
    x = 171,026,604,335.58/519,199.90
  6. Step 6: Final answer
    x = 329,404.16

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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.