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Finding the Fourth Proportional to 212,231.76, 293,299.86 and 173,930.91

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Solution

The fourth proportional to 212,231.76, 293,299.86 and 173,930.91 is: 240,368.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,231.76 : 293,299.86 = 173,930.91 : x
  2. Step 2: Convert to fraction form
    212,231.76/293,299.86 = 173,930.91/x
  3. Step 3: Cross multiply
    212,231.76x = 293,299.86 × 173,930.91
  4. Step 4: Simplify right side
    212,231.76x = 51,013,911,552.67
  5. Step 5: Solve for x
    x = 51,013,911,552.67/212,231.76
  6. Step 6: Final answer
    x = 240,368.89

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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.