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Finding the Fourth Proportional to 9,886,518.81, 13,642,794.07 and 5,475,983.01

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Solution

The fourth proportional to 9,886,518.81, 13,642,794.07 and 5,475,983.01 is: 7,556,523.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,886,518.81 : 13,642,794.07 = 5,475,983.01 : x
  2. Step 2: Convert to fraction form
    9,886,518.81/13,642,794.07 = 5,475,983.01/x
  3. Step 3: Cross multiply
    9,886,518.81x = 13,642,794.07 × 5,475,983.01
  4. Step 4: Simplify right side
    9,886,518.81x = 74,707,708,471,398.31
  5. Step 5: Solve for x
    x = 74,707,708,471,398.31/9,886,518.81
  6. Step 6: Final answer
    x = 7,556,523.17

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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.