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Finding the Fourth Proportional to 922,295,978.48, 1,272,642,748.80 and 550,939,179.44

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Solution

The fourth proportional to 922,295,978.48, 1,272,642,748.80 and 550,939,179.44 is: 760,220,979.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,295,978.48 : 1,272,642,748.80 = 550,939,179.44 : x
  2. Step 2: Convert to fraction form
    922,295,978.48/1,272,642,748.80 = 550,939,179.44/x
  3. Step 3: Cross multiply
    922,295,978.48x = 1,272,642,748.80 × 550,939,179.44
  4. Step 4: Simplify right side
    922,295,978.48x = 701,148,751,744,138,112
  5. Step 5: Solve for x
    x = 701,148,751,744,138,112/922,295,978.48
  6. Step 6: Final answer
    x = 760,220,979.06

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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.