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Finding the Fourth Proportional to 553,810.17, 830,715.14 and 133,086.05

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Solution

The fourth proportional to 553,810.17, 830,715.14 and 133,086.05 is: 199,629.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,810.17 : 830,715.14 = 133,086.05 : x
  2. Step 2: Convert to fraction form
    553,810.17/830,715.14 = 133,086.05/x
  3. Step 3: Cross multiply
    553,810.17x = 830,715.14 × 133,086.05
  4. Step 4: Simplify right side
    553,810.17x = 110,556,591,838.79
  5. Step 5: Solve for x
    x = 110,556,591,838.79/553,810.17
  6. Step 6: Final answer
    x = 199,629.04

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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.