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Finding the Fourth Proportional to 257,694.34, 355,513.20 and 172,838.74

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Solution

The fourth proportional to 257,694.34, 355,513.20 and 172,838.74 is: 238,447.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,694.34 : 355,513.20 = 172,838.74 : x
  2. Step 2: Convert to fraction form
    257,694.34/355,513.20 = 172,838.74/x
  3. Step 3: Cross multiply
    257,694.34x = 355,513.20 × 172,838.74
  4. Step 4: Simplify right side
    257,694.34x = 61,446,453,541.37
  5. Step 5: Solve for x
    x = 61,446,453,541.37/257,694.34
  6. Step 6: Final answer
    x = 238,447.04

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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.