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Finding the Fourth Proportional to 1,412,926.08, 1,949,889.16 and 809,430.72

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Solution

The fourth proportional to 1,412,926.08, 1,949,889.16 and 809,430.72 is: 1,117,043.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412,926.08 : 1,949,889.16 = 809,430.72 : x
  2. Step 2: Convert to fraction form
    1,412,926.08/1,949,889.16 = 809,430.72/x
  3. Step 3: Cross multiply
    1,412,926.08x = 1,949,889.16 × 809,430.72
  4. Step 4: Simplify right side
    1,412,926.08x = 1,578,300,186,699.00
  5. Step 5: Solve for x
    x = 1,578,300,186,699.00/1,412,926.08
  6. Step 6: Final answer
    x = 1,117,043.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.