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Finding the Fourth Proportional to 519,486.30, 778,840.65 and 283,095.90

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Solution

The fourth proportional to 519,486.30, 778,840.65 and 283,095.90 is: 424,431.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,486.30 : 778,840.65 = 283,095.90 : x
  2. Step 2: Convert to fraction form
    519,486.30/778,840.65 = 283,095.90/x
  3. Step 3: Cross multiply
    519,486.30x = 778,840.65 × 283,095.90
  4. Step 4: Simplify right side
    519,486.30x = 220,486,594,768.34
  5. Step 5: Solve for x
    x = 220,486,594,768.34/519,486.30
  6. Step 6: Final answer
    x = 424,431.97

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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.