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Finding the Fourth Proportional to 58,172.88, 87,261.08 and 18,734.16

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Solution

The fourth proportional to 58,172.88, 87,261.08 and 18,734.16 is: 28,101.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,172.88 : 87,261.08 = 18,734.16 : x
  2. Step 2: Convert to fraction form
    58,172.88/87,261.08 = 18,734.16/x
  3. Step 3: Cross multiply
    58,172.88x = 87,261.08 × 18,734.16
  4. Step 4: Simplify right side
    58,172.88x = 1,634,763,034.49
  5. Step 5: Solve for x
    x = 1,634,763,034.49/58,172.88
  6. Step 6: Final answer
    x = 28,101.81

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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.