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Finding the Fourth Proportional to 668,808.46, 922,894.59 and 396,829.54

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Solution

The fourth proportional to 668,808.46, 922,894.59 and 396,829.54 is: 547,588.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,808.46 : 922,894.59 = 396,829.54 : x
  2. Step 2: Convert to fraction form
    668,808.46/922,894.59 = 396,829.54/x
  3. Step 3: Cross multiply
    668,808.46x = 922,894.59 × 396,829.54
  4. Step 4: Simplify right side
    668,808.46x = 366,231,835,618.19
  5. Step 5: Solve for x
    x = 366,231,835,618.19/668,808.46
  6. Step 6: Final answer
    x = 547,588.52

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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.