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Finding the Fourth Proportional to 292,556.16, 438,834.18 and 79,325.28

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Solution

The fourth proportional to 292,556.16, 438,834.18 and 79,325.28 is: 118,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,556.16 : 438,834.18 = 79,325.28 : x
  2. Step 2: Convert to fraction form
    292,556.16/438,834.18 = 79,325.28/x
  3. Step 3: Cross multiply
    292,556.16x = 438,834.18 × 79,325.28
  4. Step 4: Simplify right side
    292,556.16x = 34,810,644,202.07
  5. Step 5: Solve for x
    x = 34,810,644,202.07/292,556.16
  6. Step 6: Final answer
    x = 118,987.90

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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.