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Finding the Fourth Proportional to 112,659, 168,988.50 and 29,553

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Solution

The fourth proportional to 112,659, 168,988.50 and 29,553 is: 44,329.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,659 : 168,988.50 = 29,553 : x
  2. Step 2: Convert to fraction form
    112,659/168,988.50 = 29,553/x
  3. Step 3: Cross multiply
    112,659x = 168,988.50 × 29,553
  4. Step 4: Simplify right side
    112,659x = 4,994,117,140.50
  5. Step 5: Solve for x
    x = 4,994,117,140.50/112,659
  6. Step 6: Final answer
    x = 44,329.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.