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Finding the Fourth Proportional to 109,603.80, 164,448.90 and 43,032.60

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Solution

The fourth proportional to 109,603.80, 164,448.90 and 43,032.60 is: 64,565.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,603.80 : 164,448.90 = 43,032.60 : x
  2. Step 2: Convert to fraction form
    109,603.80/164,448.90 = 43,032.60/x
  3. Step 3: Cross multiply
    109,603.80x = 164,448.90 × 43,032.60
  4. Step 4: Simplify right side
    109,603.80x = 7,076,663,734.14
  5. Step 5: Solve for x
    x = 7,076,663,734.14/109,603.80
  6. Step 6: Final answer
    x = 64,565.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.