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Finding the Fourth Proportional to 9,980,672.70, 14,971,009.05 and 7,252,608.90

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Solution

The fourth proportional to 9,980,672.70, 14,971,009.05 and 7,252,608.90 is: 10,878,913.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980,672.70 : 14,971,009.05 = 7,252,608.90 : x
  2. Step 2: Convert to fraction form
    9,980,672.70/14,971,009.05 = 7,252,608.90/x
  3. Step 3: Cross multiply
    9,980,672.70x = 14,971,009.05 × 7,252,608.90
  4. Step 4: Simplify right side
    9,980,672.70x = 108,578,873,478,010.56
  5. Step 5: Solve for x
    x = 108,578,873,478,010.56/9,980,672.70
  6. Step 6: Final answer
    x = 10,878,913.35

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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.