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Finding the Fourth Proportional to 35,398.88, 53,061.28 and 13,203.32

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Solution

The fourth proportional to 35,398.88, 53,061.28 and 13,203.32 is: 19,791.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,398.88 : 53,061.28 = 13,203.32 : x
  2. Step 2: Convert to fraction form
    35,398.88/53,061.28 = 13,203.32/x
  3. Step 3: Cross multiply
    35,398.88x = 53,061.28 × 13,203.32
  4. Step 4: Simplify right side
    35,398.88x = 700,585,059.45
  5. Step 5: Solve for x
    x = 700,585,059.45/35,398.88
  6. Step 6: Final answer
    x = 19,791.16

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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.