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Finding the Fourth Proportional to 193,985.01, 291,048.59 and 81,693.49

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Solution

The fourth proportional to 193,985.01, 291,048.59 and 81,693.49 is: 122,570.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,985.01 : 291,048.59 = 81,693.49 : x
  2. Step 2: Convert to fraction form
    193,985.01/291,048.59 = 81,693.49/x
  3. Step 3: Cross multiply
    193,985.01x = 291,048.59 × 81,693.49
  4. Step 4: Simplify right side
    193,985.01x = 23,776,774,668.21
  5. Step 5: Solve for x
    x = 23,776,774,668.21/193,985.01
  6. Step 6: Final answer
    x = 122,570.17

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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.