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Finding the Fourth Proportional to 112,563.88, 155,342.15 and 61,573.57

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Solution

The fourth proportional to 112,563.88, 155,342.15 and 61,573.57 is: 84,973.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,563.88 : 155,342.15 = 61,573.57 : x
  2. Step 2: Convert to fraction form
    112,563.88/155,342.15 = 61,573.57/x
  3. Step 3: Cross multiply
    112,563.88x = 155,342.15 × 61,573.57
  4. Step 4: Simplify right side
    112,563.88x = 9,564,970,628.00
  5. Step 5: Solve for x
    x = 9,564,970,628.00/112,563.88
  6. Step 6: Final answer
    x = 84,973.71

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1.5x scale

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.