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Finding the Fourth Proportional to 118,803.48, 163,948.92 and 64,355.77

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Solution

The fourth proportional to 118,803.48, 163,948.92 and 64,355.77 is: 88,811.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,803.48 : 163,948.92 = 64,355.77 : x
  2. Step 2: Convert to fraction form
    118,803.48/163,948.92 = 64,355.77/x
  3. Step 3: Cross multiply
    118,803.48x = 163,948.92 × 64,355.77
  4. Step 4: Simplify right side
    118,803.48x = 10,551,058,987.27
  5. Step 5: Solve for x
    x = 10,551,058,987.27/118,803.48
  6. Step 6: Final answer
    x = 88,811.03

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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.