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Finding the Fourth Proportional to 61,808.13, 92,707.53 and 19,686.51

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Solution

The fourth proportional to 61,808.13, 92,707.53 and 19,686.51 is: 29,528.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,808.13 : 92,707.53 = 19,686.51 : x
  2. Step 2: Convert to fraction form
    61,808.13/92,707.53 = 19,686.51/x
  3. Step 3: Cross multiply
    61,808.13x = 92,707.53 × 19,686.51
  4. Step 4: Simplify right side
    61,808.13x = 1,825,087,716.42
  5. Step 5: Solve for x
    x = 1,825,087,716.42/61,808.13
  6. Step 6: Final answer
    x = 29,528.28

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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.