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Finding the Fourth Proportional to 257,810.15, 355,843.40 and 176,171.44

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Solution

The fourth proportional to 257,810.15, 355,843.40 and 176,171.44 is: 243,161.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,810.15 : 355,843.40 = 176,171.44 : x
  2. Step 2: Convert to fraction form
    257,810.15/355,843.40 = 176,171.44/x
  3. Step 3: Cross multiply
    257,810.15x = 355,843.40 × 176,171.44
  4. Step 4: Simplify right side
    257,810.15x = 62,689,445,659.18
  5. Step 5: Solve for x
    x = 62,689,445,659.18/257,810.15
  6. Step 6: Final answer
    x = 243,161.28

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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.