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Finding the Fourth Proportional to 90,966.37, 136,602.92 and 59,430.37

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Solution

The fourth proportional to 90,966.37, 136,602.92 and 59,430.37 is: 89,245.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,966.37 : 136,602.92 = 59,430.37 : x
  2. Step 2: Convert to fraction form
    90,966.37/136,602.92 = 59,430.37/x
  3. Step 3: Cross multiply
    90,966.37x = 136,602.92 × 59,430.37
  4. Step 4: Simplify right side
    90,966.37x = 8,118,362,078.68
  5. Step 5: Solve for x
    x = 8,118,362,078.68/90,966.37
  6. Step 6: Final answer
    x = 89,245.75

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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.