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Finding the Fourth Proportional to 117,663.22, 162,416.91 and 69,916.29

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Solution

The fourth proportional to 117,663.22, 162,416.91 and 69,916.29 is: 96,509.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,663.22 : 162,416.91 = 69,916.29 : x
  2. Step 2: Convert to fraction form
    117,663.22/162,416.91 = 69,916.29/x
  3. Step 3: Cross multiply
    117,663.22x = 162,416.91 × 69,916.29
  4. Step 4: Simplify right side
    117,663.22x = 11,355,587,780.46
  5. Step 5: Solve for x
    x = 11,355,587,780.46/117,663.22
  6. Step 6: Final answer
    x = 96,509.24

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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.