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Finding the Fourth Proportional to 348,061.80, 521,703.90 and 148,348.20

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Solution

The fourth proportional to 348,061.80, 521,703.90 and 148,348.20 is: 222,356.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,061.80 : 521,703.90 = 148,348.20 : x
  2. Step 2: Convert to fraction form
    348,061.80/521,703.90 = 148,348.20/x
  3. Step 3: Cross multiply
    348,061.80x = 521,703.90 × 148,348.20
  4. Step 4: Simplify right side
    348,061.80x = 77,393,834,497.98
  5. Step 5: Solve for x
    x = 77,393,834,497.98/348,061.80
  6. Step 6: Final answer
    x = 222,356.59

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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.