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Finding the Fourth Proportional to 115,428.60, 162,066.60 and 115,428.60

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Solution

The fourth proportional to 115,428.60, 162,066.60 and 115,428.60 is: 162,066.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,428.60 : 162,066.60 = 115,428.60 : x
  2. Step 2: Convert to fraction form
    115,428.60/162,066.60 = 115,428.60/x
  3. Step 3: Cross multiply
    115,428.60x = 162,066.60 × 115,428.60
  4. Step 4: Simplify right side
    115,428.60x = 18,707,120,744.76
  5. Step 5: Solve for x
    x = 18,707,120,744.76/115,428.60
  6. Step 6: Final answer
    x = 162,066.60

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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.