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Finding the Fourth Proportional to 369,991.79, 554,925.09 and 103,691.01

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Solution

The fourth proportional to 369,991.79, 554,925.09 and 103,691.01 is: 155,518.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,991.79 : 554,925.09 = 103,691.01 : x
  2. Step 2: Convert to fraction form
    369,991.79/554,925.09 = 103,691.01/x
  3. Step 3: Cross multiply
    369,991.79x = 554,925.09 × 103,691.01
  4. Step 4: Simplify right side
    369,991.79x = 57,540,743,056.44
  5. Step 5: Solve for x
    x = 57,540,743,056.44/369,991.79
  6. Step 6: Final answer
    x = 155,518.97

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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.