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Finding the Fourth Proportional to 651,608.12, 899,218 and 396,959.32

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Solution

The fourth proportional to 651,608.12, 899,218 and 396,959.32 is: 547,803.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,608.12 : 899,218 = 396,959.32 : x
  2. Step 2: Convert to fraction form
    651,608.12/899,218 = 396,959.32/x
  3. Step 3: Cross multiply
    651,608.12x = 899,218 × 396,959.32
  4. Step 4: Simplify right side
    651,608.12x = 356,952,965,811.76
  5. Step 5: Solve for x
    x = 356,952,965,811.76/651,608.12
  6. Step 6: Final answer
    x = 547,803.13

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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.