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Finding the Fourth Proportional to 117,468.49, 162,032.77 and 69,688

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Solution

The fourth proportional to 117,468.49, 162,032.77 and 69,688 is: 96,125.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,468.49 : 162,032.77 = 69,688 : x
  2. Step 2: Convert to fraction form
    117,468.49/162,032.77 = 69,688/x
  3. Step 3: Cross multiply
    117,468.49x = 162,032.77 × 69,688
  4. Step 4: Simplify right side
    117,468.49x = 11,291,739,327.32
  5. Step 5: Solve for x
    x = 11,291,739,327.32/117,468.49
  6. Step 6: Final answer
    x = 96,125.69

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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.