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Finding the Fourth Proportional to 751,681,812.60, 1,127,522,718.90 and 751,681,812.60

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Solution

The fourth proportional to 751,681,812.60, 1,127,522,718.90 and 751,681,812.60 is: 1,127,522,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,681,812.60 : 1,127,522,718.90 = 751,681,812.60 : x
  2. Step 2: Convert to fraction form
    751,681,812.60/1,127,522,718.90 = 751,681,812.60/x
  3. Step 3: Cross multiply
    751,681,812.60x = 1,127,522,718.90 × 751,681,812.60
  4. Step 4: Simplify right side
    751,681,812.60x = 847,538,321,090,432,384
  5. Step 5: Solve for x
    x = 847,538,321,090,432,384/751,681,812.60
  6. Step 6: Final answer
    x = 1,127,522,718.90

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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.