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Finding the Fourth Proportional to 1,897,610.78, 2,615,978.96 and 1,352,800.72

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Solution

The fourth proportional to 1,897,610.78, 2,615,978.96 and 1,352,800.72 is: 1,864,923.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897,610.78 : 2,615,978.96 = 1,352,800.72 : x
  2. Step 2: Convert to fraction form
    1,897,610.78/2,615,978.96 = 1,352,800.72/x
  3. Step 3: Cross multiply
    1,897,610.78x = 2,615,978.96 × 1,352,800.72
  4. Step 4: Simplify right side
    1,897,610.78x = 3,538,898,215,066.45
  5. Step 5: Solve for x
    x = 3,538,898,215,066.45/1,897,610.78
  6. Step 6: Final answer
    x = 1,864,923.12

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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.