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Finding the Fourth Proportional to 169,601.10, 254,430.45 and 90,693.90

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Solution

The fourth proportional to 169,601.10, 254,430.45 and 90,693.90 is: 136,056.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,601.10 : 254,430.45 = 90,693.90 : x
  2. Step 2: Convert to fraction form
    169,601.10/254,430.45 = 90,693.90/x
  3. Step 3: Cross multiply
    169,601.10x = 254,430.45 × 90,693.90
  4. Step 4: Simplify right side
    169,601.10x = 23,075,289,789.26
  5. Step 5: Solve for x
    x = 23,075,289,789.26/169,601.10
  6. Step 6: Final answer
    x = 136,056.25

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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.