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Finding the Fourth Proportional to 451,963.18, 623,707.47 and 248,017.48

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Solution

The fourth proportional to 451,963.18, 623,707.47 and 248,017.48 is: 342,263.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,963.18 : 623,707.47 = 248,017.48 : x
  2. Step 2: Convert to fraction form
    451,963.18/623,707.47 = 248,017.48/x
  3. Step 3: Cross multiply
    451,963.18x = 623,707.47 × 248,017.48
  4. Step 4: Simplify right side
    451,963.18x = 154,690,354,966.58
  5. Step 5: Solve for x
    x = 154,690,354,966.58/451,963.18
  6. Step 6: Final answer
    x = 342,263.18

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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.