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Finding the Fourth Proportional to 17,312.23, 25,905.12 and 15,989.10

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Solution

The fourth proportional to 17,312.23, 25,905.12 and 15,989.10 is: 23,925.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,312.23 : 25,905.12 = 15,989.10 : x
  2. Step 2: Convert to fraction form
    17,312.23/25,905.12 = 15,989.10/x
  3. Step 3: Cross multiply
    17,312.23x = 25,905.12 × 15,989.10
  4. Step 4: Simplify right side
    17,312.23x = 414,199,397.09
  5. Step 5: Solve for x
    x = 414,199,397.09/17,312.23
  6. Step 6: Final answer
    x = 23,925.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.