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Finding the Fourth Proportional to 257,341.61, 355,253.45 and 171,443.75

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Solution

The fourth proportional to 257,341.61, 355,253.45 and 171,443.75 is: 236,673.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,341.61 : 355,253.45 = 171,443.75 : x
  2. Step 2: Convert to fraction form
    257,341.61/355,253.45 = 171,443.75/x
  3. Step 3: Cross multiply
    257,341.61x = 355,253.45 × 171,443.75
  4. Step 4: Simplify right side
    257,341.61x = 60,905,981,034.95
  5. Step 5: Solve for x
    x = 60,905,981,034.95/257,341.61
  6. Step 6: Final answer
    x = 236,673.66

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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.