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Finding the Fourth Proportional to 928,607.66, 1,391,117.73 and 685,019.18

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Solution

The fourth proportional to 928,607.66, 1,391,117.73 and 685,019.18 is: 1,026,205.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,607.66 : 1,391,117.73 = 685,019.18 : x
  2. Step 2: Convert to fraction form
    928,607.66/1,391,117.73 = 685,019.18/x
  3. Step 3: Cross multiply
    928,607.66x = 1,391,117.73 × 685,019.18
  4. Step 4: Simplify right side
    928,607.66x = 952,942,326,688.06
  5. Step 5: Solve for x
    x = 952,942,326,688.06/928,607.66
  6. Step 6: Final answer
    x = 1,026,205.54

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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.