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Finding the Fourth Proportional to 118,273.68, 163,210.80 and 64,548

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Solution

The fourth proportional to 118,273.68, 163,210.80 and 64,548 is: 89,072.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,273.68 : 163,210.80 = 64,548 : x
  2. Step 2: Convert to fraction form
    118,273.68/163,210.80 = 64,548/x
  3. Step 3: Cross multiply
    118,273.68x = 163,210.80 × 64,548
  4. Step 4: Simplify right side
    118,273.68x = 10,534,930,718.40
  5. Step 5: Solve for x
    x = 10,534,930,718.40/118,273.68
  6. Step 6: Final answer
    x = 89,072.49

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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.