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Finding the Fourth Proportional to 18,598.52, 25,653.90 and 11,886.20

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Solution

The fourth proportional to 18,598.52, 25,653.90 and 11,886.20 is: 16,395.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,598.52 : 25,653.90 = 11,886.20 : x
  2. Step 2: Convert to fraction form
    18,598.52/25,653.90 = 11,886.20/x
  3. Step 3: Cross multiply
    18,598.52x = 25,653.90 × 11,886.20
  4. Step 4: Simplify right side
    18,598.52x = 304,927,386.18
  5. Step 5: Solve for x
    x = 304,927,386.18/18,598.52
  6. Step 6: Final answer
    x = 16,395.25

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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.