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Finding the Fourth Proportional to 368,983.40, 553,313.10 and 169,237.40

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Solution

The fourth proportional to 368,983.40, 553,313.10 and 169,237.40 is: 253,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,983.40 : 553,313.10 = 169,237.40 : x
  2. Step 2: Convert to fraction form
    368,983.40/553,313.10 = 169,237.40/x
  3. Step 3: Cross multiply
    368,983.40x = 553,313.10 × 169,237.40
  4. Step 4: Simplify right side
    368,983.40x = 93,641,270,429.94
  5. Step 5: Solve for x
    x = 93,641,270,429.94/368,983.40
  6. Step 6: Final answer
    x = 253,781.80

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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.