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Finding the Fourth Proportional to 1,430,183.84, 1,973,171.88 and 809,904.20

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Solution

The fourth proportional to 1,430,183.84, 1,973,171.88 and 809,904.20 is: 1,117,394.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430,183.84 : 1,973,171.88 = 809,904.20 : x
  2. Step 2: Convert to fraction form
    1,430,183.84/1,973,171.88 = 809,904.20/x
  3. Step 3: Cross multiply
    1,430,183.84x = 1,973,171.88 × 809,904.20
  4. Step 4: Simplify right side
    1,430,183.84x = 1,598,080,183,068.04
  5. Step 5: Solve for x
    x = 1,598,080,183,068.04/1,430,183.84
  6. Step 6: Final answer
    x = 1,117,394.94

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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.