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Finding the Fourth Proportional to 1,974,575.76, 2,961,978.47 and 554,742.56

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Solution

The fourth proportional to 1,974,575.76, 2,961,978.47 and 554,742.56 is: 832,146.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974,575.76 : 2,961,978.47 = 554,742.56 : x
  2. Step 2: Convert to fraction form
    1,974,575.76/2,961,978.47 = 554,742.56/x
  3. Step 3: Cross multiply
    1,974,575.76x = 2,961,978.47 × 554,742.56
  4. Step 4: Simplify right side
    1,974,575.76x = 1,643,135,501,529.08
  5. Step 5: Solve for x
    x = 1,643,135,501,529.08/1,974,575.76
  6. Step 6: Final answer
    x = 832,146.09

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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.