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Finding the Fourth Proportional to 172,911.38, 238,617.70 and 93,423.38

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Solution

The fourth proportional to 172,911.38, 238,617.70 and 93,423.38 is: 128,924.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,911.38 : 238,617.70 = 93,423.38 : x
  2. Step 2: Convert to fraction form
    172,911.38/238,617.70 = 93,423.38/x
  3. Step 3: Cross multiply
    172,911.38x = 238,617.70 × 93,423.38
  4. Step 4: Simplify right side
    172,911.38x = 22,292,470,635.18
  5. Step 5: Solve for x
    x = 22,292,470,635.18/172,911.38
  6. Step 6: Final answer
    x = 128,924.26

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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.