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Finding the Fourth Proportional to 196,167.61, 270,641.61 and 128,223.75

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Solution

The fourth proportional to 196,167.61, 270,641.61 and 128,223.75 is: 176,903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,167.61 : 270,641.61 = 128,223.75 : x
  2. Step 2: Convert to fraction form
    196,167.61/270,641.61 = 128,223.75/x
  3. Step 3: Cross multiply
    196,167.61x = 270,641.61 × 128,223.75
  4. Step 4: Simplify right side
    196,167.61x = 34,702,682,140.24
  5. Step 5: Solve for x
    x = 34,702,682,140.24/196,167.61
  6. Step 6: Final answer
    x = 176,903.22

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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.