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Finding the Fourth Proportional to 9,972,652.80, 14,959,756.80 and 4,293,062.40

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Solution

The fourth proportional to 9,972,652.80, 14,959,756.80 and 4,293,062.40 is: 6,439,928.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,972,652.80 : 14,959,756.80 = 4,293,062.40 : x
  2. Step 2: Convert to fraction form
    9,972,652.80/14,959,756.80 = 4,293,062.40/x
  3. Step 3: Cross multiply
    9,972,652.80x = 14,959,756.80 × 4,293,062.40
  4. Step 4: Simplify right side
    9,972,652.80x = 64,223,169,431,224.33
  5. Step 5: Solve for x
    x = 64,223,169,431,224.33/9,972,652.80
  6. Step 6: Final answer
    x = 6,439,928.34

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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.