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Finding the Fourth Proportional to 1,259,903.97, 1,890,741.56 and 1,139,444.01

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Solution

The fourth proportional to 1,259,903.97, 1,890,741.56 and 1,139,444.01 is: 1,709,966.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,903.97 : 1,890,741.56 = 1,139,444.01 : x
  2. Step 2: Convert to fraction form
    1,259,903.97/1,890,741.56 = 1,139,444.01/x
  3. Step 3: Cross multiply
    1,259,903.97x = 1,890,741.56 × 1,139,444.01
  4. Step 4: Simplify right side
    1,259,903.97x = 2,154,394,139,302.84
  5. Step 5: Solve for x
    x = 2,154,394,139,302.84/1,259,903.97
  6. Step 6: Final answer
    x = 1,709,966.94

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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.