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Finding the Fourth Proportional to 67,699.80, 101,319.30 and 59,405.40

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Solution

The fourth proportional to 67,699.80, 101,319.30 and 59,405.40 is: 88,905.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,699.80 : 101,319.30 = 59,405.40 : x
  2. Step 2: Convert to fraction form
    67,699.80/101,319.30 = 59,405.40/x
  3. Step 3: Cross multiply
    67,699.80x = 101,319.30 × 59,405.40
  4. Step 4: Simplify right side
    67,699.80x = 6,018,913,544.22
  5. Step 5: Solve for x
    x = 6,018,913,544.22/67,699.80
  6. Step 6: Final answer
    x = 88,905.93

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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.