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Finding the Fourth Proportional to 292,287.70, 438,431.55 and 243,080.20

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Solution

The fourth proportional to 292,287.70, 438,431.55 and 243,080.20 is: 364,620.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,287.70 : 438,431.55 = 243,080.20 : x
  2. Step 2: Convert to fraction form
    292,287.70/438,431.55 = 243,080.20/x
  3. Step 3: Cross multiply
    292,287.70x = 438,431.55 × 243,080.20
  4. Step 4: Simplify right side
    292,287.70x = 106,574,028,860.31
  5. Step 5: Solve for x
    x = 106,574,028,860.31/292,287.70
  6. Step 6: Final answer
    x = 364,620.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.