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Finding the Fourth Proportional to 58,344.30, 87,516.45 and 18,905.40

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Solution

The fourth proportional to 58,344.30, 87,516.45 and 18,905.40 is: 28,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,344.30 : 87,516.45 = 18,905.40 : x
  2. Step 2: Convert to fraction form
    58,344.30/87,516.45 = 18,905.40/x
  3. Step 3: Cross multiply
    58,344.30x = 87,516.45 × 18,905.40
  4. Step 4: Simplify right side
    58,344.30x = 1,654,533,493.83
  5. Step 5: Solve for x
    x = 1,654,533,493.83/58,344.30
  6. Step 6: Final answer
    x = 28,358.10

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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.