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Finding the Fourth Proportional to 118,058.92, 162,916.52 and 64,342.80

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Solution

The fourth proportional to 118,058.92, 162,916.52 and 64,342.80 is: 88,790.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,058.92 : 162,916.52 = 64,342.80 : x
  2. Step 2: Convert to fraction form
    118,058.92/162,916.52 = 64,342.80/x
  3. Step 3: Cross multiply
    118,058.92x = 162,916.52 × 64,342.80
  4. Step 4: Simplify right side
    118,058.92x = 10,482,505,063.06
  5. Step 5: Solve for x
    x = 10,482,505,063.06/118,058.92
  6. Step 6: Final answer
    x = 88,790.45

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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.