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Finding the Fourth Proportional to 808,536.30, 1,210,471.65 and 808,536.30

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Solution

The fourth proportional to 808,536.30, 1,210,471.65 and 808,536.30 is: 1,210,471.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,536.30 : 1,210,471.65 = 808,536.30 : x
  2. Step 2: Convert to fraction form
    808,536.30/1,210,471.65 = 808,536.30/x
  3. Step 3: Cross multiply
    808,536.30x = 1,210,471.65 × 808,536.30
  4. Step 4: Simplify right side
    808,536.30x = 978,710,269,145.90
  5. Step 5: Solve for x
    x = 978,710,269,145.90/808,536.30
  6. Step 6: Final answer
    x = 1,210,471.65

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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.