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Finding the Fourth Proportional to 1,941,873.10, 2,912,809.65 and 679,828.30

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Solution

The fourth proportional to 1,941,873.10, 2,912,809.65 and 679,828.30 is: 1,019,742.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941,873.10 : 2,912,809.65 = 679,828.30 : x
  2. Step 2: Convert to fraction form
    1,941,873.10/2,912,809.65 = 679,828.30/x
  3. Step 3: Cross multiply
    1,941,873.10x = 2,912,809.65 × 679,828.30
  4. Step 4: Simplify right side
    1,941,873.10x = 1,980,210,432,583.10
  5. Step 5: Solve for x
    x = 1,980,210,432,583.10/1,941,873.10
  6. Step 6: Final answer
    x = 1,019,742.45

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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.