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Finding the Fourth Proportional to 18,030.41, 24,846.81 and 12,985.11

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Solution

The fourth proportional to 18,030.41, 24,846.81 and 12,985.11 is: 17,894.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,030.41 : 24,846.81 = 12,985.11 : x
  2. Step 2: Convert to fraction form
    18,030.41/24,846.81 = 12,985.11/x
  3. Step 3: Cross multiply
    18,030.41x = 24,846.81 × 12,985.11
  4. Step 4: Simplify right side
    18,030.41x = 322,638,561.00
  5. Step 5: Solve for x
    x = 322,638,561.00/18,030.41
  6. Step 6: Final answer
    x = 17,894.14

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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.