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Finding the Fourth Proportional to 170,684.88, 235,548.36 and 99,070.80

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Solution

The fourth proportional to 170,684.88, 235,548.36 and 99,070.80 is: 136,719.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,684.88 : 235,548.36 = 99,070.80 : x
  2. Step 2: Convert to fraction form
    170,684.88/235,548.36 = 99,070.80/x
  3. Step 3: Cross multiply
    170,684.88x = 235,548.36 × 99,070.80
  4. Step 4: Simplify right side
    170,684.88x = 23,335,964,463.89
  5. Step 5: Solve for x
    x = 23,335,964,463.89/170,684.88
  6. Step 6: Final answer
    x = 136,719.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.