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Finding the Fourth Proportional to 369,405.69, 554,139.99 and 116,618.55

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Solution

The fourth proportional to 369,405.69, 554,139.99 and 116,618.55 is: 174,937.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,405.69 : 554,139.99 = 116,618.55 : x
  2. Step 2: Convert to fraction form
    369,405.69/554,139.99 = 116,618.55/x
  3. Step 3: Cross multiply
    369,405.69x = 554,139.99 × 116,618.55
  4. Step 4: Simplify right side
    369,405.69x = 64,623,002,130.81
  5. Step 5: Solve for x
    x = 64,623,002,130.81/369,405.69
  6. Step 6: Final answer
    x = 174,937.76

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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.