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Finding the Fourth Proportional to 622,062.40, 932,918.64 and 172,674.40

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Solution

The fourth proportional to 622,062.40, 932,918.64 and 172,674.40 is: 258,963.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,062.40 : 932,918.64 = 172,674.40 : x
  2. Step 2: Convert to fraction form
    622,062.40/932,918.64 = 172,674.40/x
  3. Step 3: Cross multiply
    622,062.40x = 932,918.64 × 172,674.40
  4. Step 4: Simplify right side
    622,062.40x = 161,091,166,410.82
  5. Step 5: Solve for x
    x = 161,091,166,410.82/622,062.40
  6. Step 6: Final answer
    x = 258,963.03

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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.