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Finding the Fourth Proportional to 553,954.67, 830,931.72 and 133,230.41

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Solution

The fourth proportional to 553,954.67, 830,931.72 and 133,230.41 is: 199,845.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,954.67 : 830,931.72 = 133,230.41 : x
  2. Step 2: Convert to fraction form
    553,954.67/830,931.72 = 133,230.41/x
  3. Step 3: Cross multiply
    553,954.67x = 830,931.72 × 133,230.41
  4. Step 4: Simplify right side
    553,954.67x = 110,705,369,582.95
  5. Step 5: Solve for x
    x = 110,705,369,582.95/553,954.67
  6. Step 6: Final answer
    x = 199,845.54

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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.