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Finding the Fourth Proportional to 91,429.00, 137,053.53 and 53,430.04

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Solution

The fourth proportional to 91,429.00, 137,053.53 and 53,430.04 is: 80,092.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,429.00 : 137,053.53 = 53,430.04 : x
  2. Step 2: Convert to fraction form
    91,429.00/137,053.53 = 53,430.04/x
  3. Step 3: Cross multiply
    91,429.00x = 137,053.53 × 53,430.04
  4. Step 4: Simplify right side
    91,429.00x = 7,322,775,247.41
  5. Step 5: Solve for x
    x = 7,322,775,247.41/91,429.00
  6. Step 6: Final answer
    x = 80,092.48

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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.