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Finding the Fourth Proportional to 1,551,978,905.68, 2,141,411,173.41 and 891,801,637.84

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Solution

The fourth proportional to 1,551,978,905.68, 2,141,411,173.41 and 891,801,637.84 is: 1,230,502,544.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551,978,905.68 : 2,141,411,173.41 = 891,801,637.84 : x
  2. Step 2: Convert to fraction form
    1,551,978,905.68/2,141,411,173.41 = 891,801,637.84/x
  3. Step 3: Cross multiply
    1,551,978,905.68x = 2,141,411,173.41 × 891,801,637.84
  4. Step 4: Simplify right side
    1,551,978,905.68x = 1,909,713,991,735,914,496
  5. Step 5: Solve for x
    x = 1,909,713,991,735,914,496/1,551,978,905.68
  6. Step 6: Final answer
    x = 1,230,502,544.04

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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.