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Finding the Fourth Proportional to 296,391.45, 444,587.48 and 138,730.62

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Solution

The fourth proportional to 296,391.45, 444,587.48 and 138,730.62 is: 208,096.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,391.45 : 444,587.48 = 138,730.62 : x
  2. Step 2: Convert to fraction form
    296,391.45/444,587.48 = 138,730.62/x
  3. Step 3: Cross multiply
    296,391.45x = 444,587.48 × 138,730.62
  4. Step 4: Simplify right side
    296,391.45x = 61,677,899,018.79
  5. Step 5: Solve for x
    x = 61,677,899,018.79/296,391.45
  6. Step 6: Final answer
    x = 208,096.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.