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Finding the Fourth Proportional to 68,700.77, 94,772.24 and 42,838.08

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Solution

The fourth proportional to 68,700.77, 94,772.24 and 42,838.08 is: 59,094.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,700.77 : 94,772.24 = 42,838.08 : x
  2. Step 2: Convert to fraction form
    68,700.77/94,772.24 = 42,838.08/x
  3. Step 3: Cross multiply
    68,700.77x = 94,772.24 × 42,838.08
  4. Step 4: Simplify right side
    68,700.77x = 4,059,860,584.71
  5. Step 5: Solve for x
    x = 4,059,860,584.71/68,700.77
  6. Step 6: Final answer
    x = 59,094.84

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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.