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Finding the Fourth Proportional to 1,736,897.76, 2,396,892.60 and 972,978.66

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Solution

The fourth proportional to 1,736,897.76, 2,396,892.60 and 972,978.66 is: 1,342,695.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,736,897.76 : 2,396,892.60 = 972,978.66 : x
  2. Step 2: Convert to fraction form
    1,736,897.76/2,396,892.60 = 972,978.66/x
  3. Step 3: Cross multiply
    1,736,897.76x = 2,396,892.60 × 972,978.66
  4. Step 4: Simplify right side
    1,736,897.76x = 2,332,125,350,111.92
  5. Step 5: Solve for x
    x = 2,332,125,350,111.92/1,736,897.76
  6. Step 6: Final answer
    x = 1,342,695.81

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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.