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Finding the Fourth Proportional to 262,045.70, 392,161.35 and 156,940.10

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Solution

The fourth proportional to 262,045.70, 392,161.35 and 156,940.10 is: 234,866.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,045.70 : 392,161.35 = 156,940.10 : x
  2. Step 2: Convert to fraction form
    262,045.70/392,161.35 = 156,940.10/x
  3. Step 3: Cross multiply
    262,045.70x = 392,161.35 × 156,940.10
  4. Step 4: Simplify right side
    262,045.70x = 61,545,841,485.14
  5. Step 5: Solve for x
    x = 61,545,841,485.14/262,045.70
  6. Step 6: Final answer
    x = 234,866.82

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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.