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Finding the Fourth Proportional to 328,262.40, 453,054.96 and 247,780.80

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Solution

The fourth proportional to 328,262.40, 453,054.96 and 247,780.80 is: 341,977.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,262.40 : 453,054.96 = 247,780.80 : x
  2. Step 2: Convert to fraction form
    328,262.40/453,054.96 = 247,780.80/x
  3. Step 3: Cross multiply
    328,262.40x = 453,054.96 × 247,780.80
  4. Step 4: Simplify right side
    328,262.40x = 112,258,320,432.77
  5. Step 5: Solve for x
    x = 112,258,320,432.77/328,262.40
  6. Step 6: Final answer
    x = 341,977.40

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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.