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Finding the Fourth Proportional to 108,962.82, 163,438.47 and 64,008.90

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Solution

The fourth proportional to 108,962.82, 163,438.47 and 64,008.90 is: 96,009.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,962.82 : 163,438.47 = 64,008.90 : x
  2. Step 2: Convert to fraction form
    108,962.82/163,438.47 = 64,008.90/x
  3. Step 3: Cross multiply
    108,962.82x = 163,438.47 × 64,008.90
  4. Step 4: Simplify right side
    108,962.82x = 10,461,516,682.38
  5. Step 5: Solve for x
    x = 10,461,516,682.38/108,962.82
  6. Step 6: Final answer
    x = 96,009.97

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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.