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Finding the Fourth Proportional to 335,341.40, 503,012.10 and 86,023.40

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Solution

The fourth proportional to 335,341.40, 503,012.10 and 86,023.40 is: 129,035.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,341.40 : 503,012.10 = 86,023.40 : x
  2. Step 2: Convert to fraction form
    335,341.40/503,012.10 = 86,023.40/x
  3. Step 3: Cross multiply
    335,341.40x = 503,012.10 × 86,023.40
  4. Step 4: Simplify right side
    335,341.40x = 43,270,811,083.14
  5. Step 5: Solve for x
    x = 43,270,811,083.14/335,341.40
  6. Step 6: Final answer
    x = 129,035.10

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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.