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Finding the Fourth Proportional to 547,117.50, 755,019.25 and 317,731.18

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Solution

The fourth proportional to 547,117.50, 755,019.25 and 317,731.18 is: 438,467.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,117.50 : 755,019.25 = 317,731.18 : x
  2. Step 2: Convert to fraction form
    547,117.50/755,019.25 = 317,731.18/x
  3. Step 3: Cross multiply
    547,117.50x = 755,019.25 × 317,731.18
  4. Step 4: Simplify right side
    547,117.50x = 239,893,157,225.22
  5. Step 5: Solve for x
    x = 239,893,157,225.22/547,117.50
  6. Step 6: Final answer
    x = 438,467.34

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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.