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Finding the Fourth Proportional to 118,472.82, 163,386.63 and 98,297.76

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Solution

The fourth proportional to 118,472.82, 163,386.63 and 98,297.76 is: 135,563.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,472.82 : 163,386.63 = 98,297.76 : x
  2. Step 2: Convert to fraction form
    118,472.82/163,386.63 = 98,297.76/x
  3. Step 3: Cross multiply
    118,472.82x = 163,386.63 × 98,297.76
  4. Step 4: Simplify right side
    118,472.82x = 16,060,539,742.95
  5. Step 5: Solve for x
    x = 16,060,539,742.95/118,472.82
  6. Step 6: Final answer
    x = 135,563.07

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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.