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Finding the Fourth Proportional to 18,574.70, 25,633.13 and 10,621.58

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Solution

The fourth proportional to 18,574.70, 25,633.13 and 10,621.58 is: 14,657.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.70 : 25,633.13 = 10,621.58 : x
  2. Step 2: Convert to fraction form
    18,574.70/25,633.13 = 10,621.58/x
  3. Step 3: Cross multiply
    18,574.70x = 25,633.13 × 10,621.58
  4. Step 4: Simplify right side
    18,574.70x = 272,264,159.67
  5. Step 5: Solve for x
    x = 272,264,159.67/18,574.70
  6. Step 6: Final answer
    x = 14,657.80

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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.