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Finding the Fourth Proportional to 117,124.88, 161,633.60 and 63,411.02

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Solution

The fourth proportional to 117,124.88, 161,633.60 and 63,411.02 is: 87,507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,124.88 : 161,633.60 = 63,411.02 : x
  2. Step 2: Convert to fraction form
    117,124.88/161,633.60 = 63,411.02/x
  3. Step 3: Cross multiply
    117,124.88x = 161,633.60 × 63,411.02
  4. Step 4: Simplify right side
    117,124.88x = 10,249,351,442.27
  5. Step 5: Solve for x
    x = 10,249,351,442.27/117,124.88
  6. Step 6: Final answer
    x = 87,507.89

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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.