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Finding the Fourth Proportional to 1,619,234.60, 2,428,851.90 and 777,583.40

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Solution

The fourth proportional to 1,619,234.60, 2,428,851.90 and 777,583.40 is: 1,166,375.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619,234.60 : 2,428,851.90 = 777,583.40 : x
  2. Step 2: Convert to fraction form
    1,619,234.60/2,428,851.90 = 777,583.40/x
  3. Step 3: Cross multiply
    1,619,234.60x = 2,428,851.90 × 777,583.40
  4. Step 4: Simplify right side
    1,619,234.60x = 1,888,634,918,498.46
  5. Step 5: Solve for x
    x = 1,888,634,918,498.46/1,619,234.60
  6. Step 6: Final answer
    x = 1,166,375.10

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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.