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Finding the Fourth Proportional to 657,991.06, 988,384.98 and 619,596.94

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Solution

The fourth proportional to 657,991.06, 988,384.98 and 619,596.94 is: 930,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,991.06 : 988,384.98 = 619,596.94 : x
  2. Step 2: Convert to fraction form
    657,991.06/988,384.98 = 619,596.94/x
  3. Step 3: Cross multiply
    657,991.06x = 988,384.98 × 619,596.94
  4. Step 4: Simplify right side
    657,991.06x = 612,400,309,149.96
  5. Step 5: Solve for x
    x = 612,400,309,149.96/657,991.06
  6. Step 6: Final answer
    x = 930,712.20

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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.