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Finding the Fourth Proportional to 117,455.96, 162,089.65 and 63,740.96

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Solution

The fourth proportional to 117,455.96, 162,089.65 and 63,740.96 is: 87,962.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,455.96 : 162,089.65 = 63,740.96 : x
  2. Step 2: Convert to fraction form
    117,455.96/162,089.65 = 63,740.96/x
  3. Step 3: Cross multiply
    117,455.96x = 162,089.65 × 63,740.96
  4. Step 4: Simplify right side
    117,455.96x = 10,331,749,897.06
  5. Step 5: Solve for x
    x = 10,331,749,897.06/117,455.96
  6. Step 6: Final answer
    x = 87,962.76

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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.