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Finding the Fourth Proportional to 369,046.55, 553,486.73 and 132,389.21

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Solution

The fourth proportional to 369,046.55, 553,486.73 and 132,389.21 is: 198,554.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,046.55 : 553,486.73 = 132,389.21 : x
  2. Step 2: Convert to fraction form
    369,046.55/553,486.73 = 132,389.21/x
  3. Step 3: Cross multiply
    369,046.55x = 553,486.73 × 132,389.21
  4. Step 4: Simplify right side
    369,046.55x = 73,275,671,651.95
  5. Step 5: Solve for x
    x = 73,275,671,651.95/369,046.55
  6. Step 6: Final answer
    x = 198,554.01

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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.