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Finding the Fourth Proportional to 58,685.40, 87,830.46 and 53,829.72

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Solution

The fourth proportional to 58,685.40, 87,830.46 and 53,829.72 is: 80,563.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,685.40 : 87,830.46 = 53,829.72 : x
  2. Step 2: Convert to fraction form
    58,685.40/87,830.46 = 53,829.72/x
  3. Step 3: Cross multiply
    58,685.40x = 87,830.46 × 53,829.72
  4. Step 4: Simplify right side
    58,685.40x = 4,727,889,069.27
  5. Step 5: Solve for x
    x = 4,727,889,069.27/58,685.40
  6. Step 6: Final answer
    x = 80,563.29

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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.