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Finding the Fourth Proportional to 620,000.88, 855,572.07 and 344,376.61

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Solution

The fourth proportional to 620,000.88, 855,572.07 and 344,376.61 is: 475,223.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,000.88 : 855,572.07 = 344,376.61 : x
  2. Step 2: Convert to fraction form
    620,000.88/855,572.07 = 344,376.61/x
  3. Step 3: Cross multiply
    620,000.88x = 855,572.07 × 344,376.61
  4. Step 4: Simplify right side
    620,000.88x = 294,639,006,938.35
  5. Step 5: Solve for x
    x = 294,639,006,938.35/620,000.88
  6. Step 6: Final answer
    x = 475,223.53

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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.