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Finding the Fourth Proportional to 116,781, 161,157.77 and 63,066.01

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Solution

The fourth proportional to 116,781, 161,157.77 and 63,066.01 is: 87,031.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,781 : 161,157.77 = 63,066.01 : x
  2. Step 2: Convert to fraction form
    116,781/161,157.77 = 63,066.01/x
  3. Step 3: Cross multiply
    116,781x = 161,157.77 × 63,066.01
  4. Step 4: Simplify right side
    116,781x = 10,163,577,534.40
  5. Step 5: Solve for x
    x = 10,163,577,534.40/116,781
  6. Step 6: Final answer
    x = 87,031.09

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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.