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Finding the Fourth Proportional to 151,605.90, 212,559.30 and 151,605.90

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Solution

The fourth proportional to 151,605.90, 212,559.30 and 151,605.90 is: 212,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,605.90 : 212,559.30 = 151,605.90 : x
  2. Step 2: Convert to fraction form
    151,605.90/212,559.30 = 151,605.90/x
  3. Step 3: Cross multiply
    151,605.90x = 212,559.30 × 151,605.90
  4. Step 4: Simplify right side
    151,605.90x = 32,225,243,979.87
  5. Step 5: Solve for x
    x = 32,225,243,979.87/151,605.90
  6. Step 6: Final answer
    x = 212,559.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.