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Finding the Fourth Proportional to 292,486.44, 438,758.46 and 121,673.10

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Solution

The fourth proportional to 292,486.44, 438,758.46 and 121,673.10 is: 182,521.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,486.44 : 438,758.46 = 121,673.10 : x
  2. Step 2: Convert to fraction form
    292,486.44/438,758.46 = 121,673.10/x
  3. Step 3: Cross multiply
    292,486.44x = 438,758.46 × 121,673.10
  4. Step 4: Simplify right side
    292,486.44x = 53,385,101,979.43
  5. Step 5: Solve for x
    x = 53,385,101,979.43/292,486.44
  6. Step 6: Final answer
    x = 182,521.63

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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.