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Finding the Fourth Proportional to 682,800.66, 942,124.24 and 392,356.10

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Solution

The fourth proportional to 682,800.66, 942,124.24 and 392,356.10 is: 541,370.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,800.66 : 942,124.24 = 392,356.10 : x
  2. Step 2: Convert to fraction form
    682,800.66/942,124.24 = 392,356.10/x
  3. Step 3: Cross multiply
    682,800.66x = 942,124.24 × 392,356.10
  4. Step 4: Simplify right side
    682,800.66x = 369,648,192,521.86
  5. Step 5: Solve for x
    x = 369,648,192,521.86/682,800.66
  6. Step 6: Final answer
    x = 541,370.58

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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.