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Finding the Fourth Proportional to 67,850.58, 93,631.58 and 40,988.40

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Solution

The fourth proportional to 67,850.58, 93,631.58 and 40,988.40 is: 56,562.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,850.58 : 93,631.58 = 40,988.40 : x
  2. Step 2: Convert to fraction form
    67,850.58/93,631.58 = 40,988.40/x
  3. Step 3: Cross multiply
    67,850.58x = 93,631.58 × 40,988.40
  4. Step 4: Simplify right side
    67,850.58x = 3,837,808,653.67
  5. Step 5: Solve for x
    x = 3,837,808,653.67/67,850.58
  6. Step 6: Final answer
    x = 56,562.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.