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Finding the Fourth Proportional to 519,199.44, 716,819.60 and 398,108.12

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Solution

The fourth proportional to 519,199.44, 716,819.60 and 398,108.12 is: 549,637.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,199.44 : 716,819.60 = 398,108.12 : x
  2. Step 2: Convert to fraction form
    519,199.44/716,819.60 = 398,108.12/x
  3. Step 3: Cross multiply
    519,199.44x = 716,819.60 × 398,108.12
  4. Step 4: Simplify right side
    519,199.44x = 285,371,703,335.15
  5. Step 5: Solve for x
    x = 285,371,703,335.15/519,199.44
  6. Step 6: Final answer
    x = 549,637.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.