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Finding the Fourth Proportional to 1,909,788.16, 2,635,580.16 and 1,050,388.48

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Solution

The fourth proportional to 1,909,788.16, 2,635,580.16 and 1,050,388.48 is: 1,449,575.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909,788.16 : 2,635,580.16 = 1,050,388.48 : x
  2. Step 2: Convert to fraction form
    1,909,788.16/2,635,580.16 = 1,050,388.48/x
  3. Step 3: Cross multiply
    1,909,788.16x = 2,635,580.16 × 1,050,388.48
  4. Step 4: Simplify right side
    1,909,788.16x = 2,768,383,038,180.56
  5. Step 5: Solve for x
    x = 2,768,383,038,180.56/1,909,788.16
  6. Step 6: Final answer
    x = 1,449,575.98

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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.