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Finding the Fourth Proportional to 1,192,854.40, 1,788,115.20 and 1,066,883.20

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Solution

The fourth proportional to 1,192,854.40, 1,788,115.20 and 1,066,883.20 is: 1,599,281.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192,854.40 : 1,788,115.20 = 1,066,883.20 : x
  2. Step 2: Convert to fraction form
    1,192,854.40/1,788,115.20 = 1,066,883.20/x
  3. Step 3: Cross multiply
    1,192,854.40x = 1,788,115.20 × 1,066,883.20
  4. Step 4: Simplify right side
    1,192,854.40x = 1,907,710,066,544.64
  5. Step 5: Solve for x
    x = 1,907,710,066,544.64/1,192,854.40
  6. Step 6: Final answer
    x = 1,599,281.58

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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.