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Finding the Fourth Proportional to 58,415.92, 87,636.52 and 18,972.16

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Solution

The fourth proportional to 58,415.92, 87,636.52 and 18,972.16 is: 28,462.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,415.92 : 87,636.52 = 18,972.16 : x
  2. Step 2: Convert to fraction form
    58,415.92/87,636.52 = 18,972.16/x
  3. Step 3: Cross multiply
    58,415.92x = 87,636.52 × 18,972.16
  4. Step 4: Simplify right side
    58,415.92x = 1,662,654,079.28
  5. Step 5: Solve for x
    x = 1,662,654,079.28/58,415.92
  6. Step 6: Final answer
    x = 28,462.35

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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.