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Finding the Fourth Proportional to 922,791.80, 1,384,187.70 and 904,129.40

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Solution

The fourth proportional to 922,791.80, 1,384,187.70 and 904,129.40 is: 1,356,194.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,791.80 : 1,384,187.70 = 904,129.40 : x
  2. Step 2: Convert to fraction form
    922,791.80/1,384,187.70 = 904,129.40/x
  3. Step 3: Cross multiply
    922,791.80x = 1,384,187.70 × 904,129.40
  4. Step 4: Simplify right side
    922,791.80x = 1,251,484,794,688.38
  5. Step 5: Solve for x
    x = 1,251,484,794,688.38/922,791.80
  6. Step 6: Final answer
    x = 1,356,194.10

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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.