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Finding the Fourth Proportional to 208,041.90, 312,062.85 and 208,041.90

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Solution

The fourth proportional to 208,041.90, 312,062.85 and 208,041.90 is: 312,062.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,041.90 : 312,062.85 = 208,041.90 : x
  2. Step 2: Convert to fraction form
    208,041.90/312,062.85 = 208,041.90/x
  3. Step 3: Cross multiply
    208,041.90x = 312,062.85 × 208,041.90
  4. Step 4: Simplify right side
    208,041.90x = 64,922,148,233.42
  5. Step 5: Solve for x
    x = 64,922,148,233.42/208,041.90
  6. Step 6: Final answer
    x = 312,062.85

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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.