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Finding the Fourth Proportional to 647,755.68, 893,440.07 and 561,560.55

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Solution

The fourth proportional to 647,755.68, 893,440.07 and 561,560.55 is: 774,552.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,755.68 : 893,440.07 = 561,560.55 : x
  2. Step 2: Convert to fraction form
    647,755.68/893,440.07 = 561,560.55/x
  3. Step 3: Cross multiply
    647,755.68x = 893,440.07 × 561,560.55
  4. Step 4: Simplify right side
    647,755.68x = 501,720,696,207.69
  5. Step 5: Solve for x
    x = 501,720,696,207.69/647,755.68
  6. Step 6: Final answer
    x = 774,552.36

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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.