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Finding the Fourth Proportional to 1,296,640,059.76, 1,789,361,223.12 and 701,924,386.48

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Solution

The fourth proportional to 1,296,640,059.76, 1,789,361,223.12 and 701,924,386.48 is: 968,654,538.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,640,059.76 : 1,789,361,223.12 = 701,924,386.48 : x
  2. Step 2: Convert to fraction form
    1,296,640,059.76/1,789,361,223.12 = 701,924,386.48/x
  3. Step 3: Cross multiply
    1,296,640,059.76x = 1,789,361,223.12 × 701,924,386.48
  4. Step 4: Simplify right side
    1,296,640,059.76x = 1,255,996,278,729,608,448
  5. Step 5: Solve for x
    x = 1,255,996,278,729,608,448/1,296,640,059.76
  6. Step 6: Final answer
    x = 968,654,538.53

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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.