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Finding the Fourth Proportional to 18,263.91, 25,204.19 and 9,880.41

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Solution

The fourth proportional to 18,263.91, 25,204.19 and 9,880.41 is: 13,634.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,263.91 : 25,204.19 = 9,880.41 : x
  2. Step 2: Convert to fraction form
    18,263.91/25,204.19 = 9,880.41/x
  3. Step 3: Cross multiply
    18,263.91x = 25,204.19 × 9,880.41
  4. Step 4: Simplify right side
    18,263.91x = 249,027,681.52
  5. Step 5: Solve for x
    x = 249,027,681.52/18,263.91
  6. Step 6: Final answer
    x = 13,634.96

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Half scale
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Double scale
Find fourth proportional to 18,264.91, 25,205.56 and 9,881.41
Similar ratio
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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.