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Finding the Fourth Proportional to 668,849.97, 922,711.59 and 396,929.34

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Solution

The fourth proportional to 668,849.97, 922,711.59 and 396,929.34 is: 547,583.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,849.97 : 922,711.59 = 396,929.34 : x
  2. Step 2: Convert to fraction form
    668,849.97/922,711.59 = 396,929.34/x
  3. Step 3: Cross multiply
    668,849.97x = 922,711.59 × 396,929.34
  4. Step 4: Simplify right side
    668,849.97x = 366,251,302,429.05
  5. Step 5: Solve for x
    x = 366,251,302,429.05/668,849.97
  6. Step 6: Final answer
    x = 547,583.64

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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.