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Finding the Fourth Proportional to 254,718.76, 351,510.90 and 140,005

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Solution

The fourth proportional to 254,718.76, 351,510.90 and 140,005 is: 193,206.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,718.76 : 351,510.90 = 140,005 : x
  2. Step 2: Convert to fraction form
    254,718.76/351,510.90 = 140,005/x
  3. Step 3: Cross multiply
    254,718.76x = 351,510.90 × 140,005
  4. Step 4: Simplify right side
    254,718.76x = 49,213,283,554.50
  5. Step 5: Solve for x
    x = 49,213,283,554.50/254,718.76
  6. Step 6: Final answer
    x = 193,206.36

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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.