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Finding the Fourth Proportional to 666,009.18, 919,201.21 and 495,062.33

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Solution

The fourth proportional to 666,009.18, 919,201.21 and 495,062.33 is: 683,266.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,009.18 : 919,201.21 = 495,062.33 : x
  2. Step 2: Convert to fraction form
    666,009.18/919,201.21 = 495,062.33/x
  3. Step 3: Cross multiply
    666,009.18x = 919,201.21 × 495,062.33
  4. Step 4: Simplify right side
    666,009.18x = 455,061,886,927.76
  5. Step 5: Solve for x
    x = 455,061,886,927.76/666,009.18
  6. Step 6: Final answer
    x = 683,266.69

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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.