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Finding the Fourth Proportional to 292,092.80, 438,139.20 and 114,605.60

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Solution

The fourth proportional to 292,092.80, 438,139.20 and 114,605.60 is: 171,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,092.80 : 438,139.20 = 114,605.60 : x
  2. Step 2: Convert to fraction form
    292,092.80/438,139.20 = 114,605.60/x
  3. Step 3: Cross multiply
    292,092.80x = 438,139.20 × 114,605.60
  4. Step 4: Simplify right side
    292,092.80x = 50,213,205,899.52
  5. Step 5: Solve for x
    x = 50,213,205,899.52/292,092.80
  6. Step 6: Final answer
    x = 171,908.40

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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.