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Finding the Fourth Proportional to 368,871.75, 553,304.52 and 102,631.50

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Solution

The fourth proportional to 368,871.75, 553,304.52 and 102,631.50 is: 153,946.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,871.75 : 553,304.52 = 102,631.50 : x
  2. Step 2: Convert to fraction form
    368,871.75/553,304.52 = 102,631.50/x
  3. Step 3: Cross multiply
    368,871.75x = 553,304.52 × 102,631.50
  4. Step 4: Simplify right side
    368,871.75x = 56,786,472,844.38
  5. Step 5: Solve for x
    x = 56,786,472,844.38/368,871.75
  6. Step 6: Final answer
    x = 153,946.39

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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.