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Finding the Fourth Proportional to 519,200.90, 778,801.35 and 219,603.77

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Solution

The fourth proportional to 519,200.90, 778,801.35 and 219,603.77 is: 329,405.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,200.90 : 778,801.35 = 219,603.77 : x
  2. Step 2: Convert to fraction form
    519,200.90/778,801.35 = 219,603.77/x
  3. Step 3: Cross multiply
    519,200.90x = 778,801.35 × 219,603.77
  4. Step 4: Simplify right side
    519,200.90x = 171,027,712,541.09
  5. Step 5: Solve for x
    x = 171,027,712,541.09/519,200.90
  6. Step 6: Final answer
    x = 329,405.66

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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.