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Finding the Fourth Proportional to 451,073.61, 621,061.43 and 382,955.85

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Solution

The fourth proportional to 451,073.61, 621,061.43 and 382,955.85 is: 527,273.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,073.61 : 621,061.43 = 382,955.85 : x
  2. Step 2: Convert to fraction form
    451,073.61/621,061.43 = 382,955.85/x
  3. Step 3: Cross multiply
    451,073.61x = 621,061.43 × 382,955.85
  4. Step 4: Simplify right side
    451,073.61x = 237,839,105,913.09
  5. Step 5: Solve for x
    x = 237,839,105,913.09/451,073.61
  6. Step 6: Final answer
    x = 527,273.38

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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.