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Finding the Fourth Proportional to 62,130.62, 93,128.90 and 30,503.90

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Solution

The fourth proportional to 62,130.62, 93,128.90 and 30,503.90 is: 45,722.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,130.62 : 93,128.90 = 30,503.90 : x
  2. Step 2: Convert to fraction form
    62,130.62/93,128.90 = 30,503.90/x
  3. Step 3: Cross multiply
    62,130.62x = 93,128.90 × 30,503.90
  4. Step 4: Simplify right side
    62,130.62x = 2,840,794,652.71
  5. Step 5: Solve for x
    x = 2,840,794,652.71/62,130.62
  6. Step 6: Final answer
    x = 45,722.94

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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.