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Finding the Fourth Proportional to 450,176.78, 621,263.85 and 259,251.68

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Solution

The fourth proportional to 450,176.78, 621,263.85 and 259,251.68 is: 357,778.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,176.78 : 621,263.85 = 259,251.68 : x
  2. Step 2: Convert to fraction form
    450,176.78/621,263.85 = 259,251.68/x
  3. Step 3: Cross multiply
    450,176.78x = 621,263.85 × 259,251.68
  4. Step 4: Simplify right side
    450,176.78x = 161,063,693,729.45
  5. Step 5: Solve for x
    x = 161,063,693,729.45/450,176.78
  6. Step 6: Final answer
    x = 357,778.77

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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.