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Finding the Fourth Proportional to 293,220.70, 439,312.65 and 260,043.10

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Solution

The fourth proportional to 293,220.70, 439,312.65 and 260,043.10 is: 389,604.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,220.70 : 439,312.65 = 260,043.10 : x
  2. Step 2: Convert to fraction form
    293,220.70/439,312.65 = 260,043.10/x
  3. Step 3: Cross multiply
    293,220.70x = 439,312.65 × 260,043.10
  4. Step 4: Simplify right side
    293,220.70x = 114,240,223,375.22
  5. Step 5: Solve for x
    x = 114,240,223,375.22/293,220.70
  6. Step 6: Final answer
    x = 389,604.91

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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.