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Finding the Fourth Proportional to 1,488,585.60, 2,086,819.20 and 1,488,585.60

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Solution

The fourth proportional to 1,488,585.60, 2,086,819.20 and 1,488,585.60 is: 2,086,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488,585.60 : 2,086,819.20 = 1,488,585.60 : x
  2. Step 2: Convert to fraction form
    1,488,585.60/2,086,819.20 = 1,488,585.60/x
  3. Step 3: Cross multiply
    1,488,585.60x = 2,086,819.20 × 1,488,585.60
  4. Step 4: Simplify right side
    1,488,585.60x = 3,106,409,010,923.52
  5. Step 5: Solve for x
    x = 3,106,409,010,923.52/1,488,585.60
  6. Step 6: Final answer
    x = 2,086,819.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.