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Finding the Fourth Proportional to 118,633.50, 163,712.99 and 67,654.53

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Solution

The fourth proportional to 118,633.50, 163,712.99 and 67,654.53 is: 93,362.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,633.50 : 163,712.99 = 67,654.53 : x
  2. Step 2: Convert to fraction form
    118,633.50/163,712.99 = 67,654.53/x
  3. Step 3: Cross multiply
    118,633.50x = 163,712.99 × 67,654.53
  4. Step 4: Simplify right side
    118,633.50x = 11,075,925,055.07
  5. Step 5: Solve for x
    x = 11,075,925,055.07/118,633.50
  6. Step 6: Final answer
    x = 93,362.54

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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.