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Finding the Fourth Proportional to 118,463.58, 163,373.86 and 98,288.50

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Solution

The fourth proportional to 118,463.58, 163,373.86 and 98,288.50 is: 135,550.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,463.58 : 163,373.86 = 98,288.50 : x
  2. Step 2: Convert to fraction form
    118,463.58/163,373.86 = 98,288.50/x
  3. Step 3: Cross multiply
    118,463.58x = 163,373.86 × 98,288.50
  4. Step 4: Simplify right side
    118,463.58x = 16,057,771,638.61
  5. Step 5: Solve for x
    x = 16,057,771,638.61/118,463.58
  6. Step 6: Final answer
    x = 135,550.28

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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.