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Finding the Fourth Proportional to 289,312.86, 399,299.06 and 173,018.73

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Solution

The fourth proportional to 289,312.86, 399,299.06 and 173,018.73 is: 238,794.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,312.86 : 399,299.06 = 173,018.73 : x
  2. Step 2: Convert to fraction form
    289,312.86/399,299.06 = 173,018.73/x
  3. Step 3: Cross multiply
    289,312.86x = 399,299.06 × 173,018.73
  4. Step 4: Simplify right side
    289,312.86x = 69,086,215,386.30
  5. Step 5: Solve for x
    x = 69,086,215,386.30/289,312.86
  6. Step 6: Final answer
    x = 238,794.14

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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.