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Finding the Fourth Proportional to 71,740.64, 99,005.28 and 59,783.96

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Solution

The fourth proportional to 71,740.64, 99,005.28 and 59,783.96 is: 82,504.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,740.64 : 99,005.28 = 59,783.96 : x
  2. Step 2: Convert to fraction form
    71,740.64/99,005.28 = 59,783.96/x
  3. Step 3: Cross multiply
    71,740.64x = 99,005.28 × 59,783.96
  4. Step 4: Simplify right side
    71,740.64x = 5,918,927,699.31
  5. Step 5: Solve for x
    x = 5,918,927,699.31/71,740.64
  6. Step 6: Final answer
    x = 82,504.53

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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.