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Finding the Fourth Proportional to 907,728.88, 1,252,476.12 and 525,732.88

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Solution

The fourth proportional to 907,728.88, 1,252,476.12 and 525,732.88 is: 725,401.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,728.88 : 1,252,476.12 = 525,732.88 : x
  2. Step 2: Convert to fraction form
    907,728.88/1,252,476.12 = 525,732.88/x
  3. Step 3: Cross multiply
    907,728.88x = 1,252,476.12 × 525,732.88
  4. Step 4: Simplify right side
    907,728.88x = 658,467,877,698.83
  5. Step 5: Solve for x
    x = 658,467,877,698.83/907,728.88
  6. Step 6: Final answer
    x = 725,401.49

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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.