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Finding the Fourth Proportional to 312,443.83, 431,176.67 and 174,616.71

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Solution

The fourth proportional to 312,443.83, 431,176.67 and 174,616.71 is: 240,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,443.83 : 431,176.67 = 174,616.71 : x
  2. Step 2: Convert to fraction form
    312,443.83/431,176.67 = 174,616.71/x
  3. Step 3: Cross multiply
    312,443.83x = 431,176.67 × 174,616.71
  4. Step 4: Simplify right side
    312,443.83x = 75,290,651,544.16
  5. Step 5: Solve for x
    x = 75,290,651,544.16/312,443.83
  6. Step 6: Final answer
    x = 240,973.40

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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.