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Finding the Fourth Proportional to 19,548,871.68, 26,978,920.80 and 10,848,689.28

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Solution

The fourth proportional to 19,548,871.68, 26,978,920.80 and 10,848,689.28 is: 14,972,011.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,548,871.68 : 26,978,920.80 = 10,848,689.28 : x
  2. Step 2: Convert to fraction form
    19,548,871.68/26,978,920.80 = 10,848,689.28/x
  3. Step 3: Cross multiply
    19,548,871.68x = 26,978,920.80 × 10,848,689.28
  4. Step 4: Simplify right side
    19,548,871.68x = 292,685,928,868,929
  5. Step 5: Solve for x
    x = 292,685,928,868,929/19,548,871.68
  6. Step 6: Final answer
    x = 14,972,011.36

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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.