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Finding the Fourth Proportional to 928,681.88, 1,393,023.11 and 613,064.97

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Solution

The fourth proportional to 928,681.88, 1,393,023.11 and 613,064.97 is: 919,597.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,681.88 : 1,393,023.11 = 613,064.97 : x
  2. Step 2: Convert to fraction form
    928,681.88/1,393,023.11 = 613,064.97/x
  3. Step 3: Cross multiply
    928,681.88x = 1,393,023.11 × 613,064.97
  4. Step 4: Simplify right side
    928,681.88x = 854,013,671,141.46
  5. Step 5: Solve for x
    x = 854,013,671,141.46/928,681.88
  6. Step 6: Final answer
    x = 919,597.65

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1.5x scale

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.