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Finding the Fourth Proportional to 211,913.22, 317,750.01 and 69,720.02

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Solution

The fourth proportional to 211,913.22, 317,750.01 and 69,720.02 is: 104,540.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,913.22 : 317,750.01 = 69,720.02 : x
  2. Step 2: Convert to fraction form
    211,913.22/317,750.01 = 69,720.02/x
  3. Step 3: Cross multiply
    211,913.22x = 317,750.01 × 69,720.02
  4. Step 4: Simplify right side
    211,913.22x = 22,153,535,463.45
  5. Step 5: Solve for x
    x = 22,153,535,463.45/211,913.22
  6. Step 6: Final answer
    x = 104,540.60

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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.