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Finding the Fourth Proportional to 58,356.21, 87,515.96 and 18,904.17

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Solution

The fourth proportional to 58,356.21, 87,515.96 and 18,904.17 is: 28,350.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,356.21 : 87,515.96 = 18,904.17 : x
  2. Step 2: Convert to fraction form
    58,356.21/87,515.96 = 18,904.17/x
  3. Step 3: Cross multiply
    58,356.21x = 87,515.96 × 18,904.17
  4. Step 4: Simplify right side
    58,356.21x = 1,654,416,491.03
  5. Step 5: Solve for x
    x = 1,654,416,491.03/58,356.21
  6. Step 6: Final answer
    x = 28,350.31

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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.