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Finding the Fourth Proportional to 62,209.40, 93,314.10 and 20,656.40

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Solution

The fourth proportional to 62,209.40, 93,314.10 and 20,656.40 is: 30,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,209.40 : 93,314.10 = 20,656.40 : x
  2. Step 2: Convert to fraction form
    62,209.40/93,314.10 = 20,656.40/x
  3. Step 3: Cross multiply
    62,209.40x = 93,314.10 × 20,656.40
  4. Step 4: Simplify right side
    62,209.40x = 1,927,533,375.24
  5. Step 5: Solve for x
    x = 1,927,533,375.24/62,209.40
  6. Step 6: Final answer
    x = 30,984.60

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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.