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Finding the Fourth Proportional to 118,373.63, 163,354.64 and 64,658.66

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Solution

The fourth proportional to 118,373.63, 163,354.64 and 64,658.66 is: 89,228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,373.63 : 163,354.64 = 64,658.66 : x
  2. Step 2: Convert to fraction form
    118,373.63/163,354.64 = 64,658.66/x
  3. Step 3: Cross multiply
    118,373.63x = 163,354.64 × 64,658.66
  4. Step 4: Simplify right side
    118,373.63x = 10,562,290,987.12
  5. Step 5: Solve for x
    x = 10,562,290,987.12/118,373.63
  6. Step 6: Final answer
    x = 89,228.42

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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.