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Finding the Fourth Proportional to 118,353.86, 163,329.64 and 64,640.46

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Solution

The fourth proportional to 118,353.86, 163,329.64 and 64,640.46 is: 89,204.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,353.86 : 163,329.64 = 64,640.46 : x
  2. Step 2: Convert to fraction form
    118,353.86/163,329.64 = 64,640.46/x
  3. Step 3: Cross multiply
    118,353.86x = 163,329.64 × 64,640.46
  4. Step 4: Simplify right side
    118,353.86x = 10,557,703,061.23
  5. Step 5: Solve for x
    x = 10,557,703,061.23/118,353.86
  6. Step 6: Final answer
    x = 89,204.55

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1.5x scale

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.