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Finding the Fourth Proportional to 7,161,357.51, 9,882,799.47 and 3,898,266.03

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Solution

The fourth proportional to 7,161,357.51, 9,882,799.47 and 3,898,266.03 is: 5,379,675.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161,357.51 : 9,882,799.47 = 3,898,266.03 : x
  2. Step 2: Convert to fraction form
    7,161,357.51/9,882,799.47 = 3,898,266.03/x
  3. Step 3: Cross multiply
    7,161,357.51x = 9,882,799.47 × 3,898,266.03
  4. Step 4: Simplify right side
    7,161,357.51x = 38,525,781,455,203.01
  5. Step 5: Solve for x
    x = 38,525,781,455,203.01/7,161,357.51
  6. Step 6: Final answer
    x = 5,379,675.77

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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.