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Finding the Fourth Proportional to 523,940.88, 786,064.68 and 168,947.76

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Solution

The fourth proportional to 523,940.88, 786,064.68 and 168,947.76 is: 253,471.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,940.88 : 786,064.68 = 168,947.76 : x
  2. Step 2: Convert to fraction form
    523,940.88/786,064.68 = 168,947.76/x
  3. Step 3: Cross multiply
    523,940.88x = 786,064.68 × 168,947.76
  4. Step 4: Simplify right side
    523,940.88x = 132,803,866,901.12
  5. Step 5: Solve for x
    x = 132,803,866,901.12/523,940.88
  6. Step 6: Final answer
    x = 253,471.09

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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.