Home / 18,931,773.16-28,410,438.32-7,415,812.36

Finding the Fourth Proportional to 18,931,773.16, 28,410,438.32 and 7,415,812.36

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Solution

The fourth proportional to 18,931,773.16, 28,410,438.32 and 7,415,812.36 is: 11,128,724.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931,773.16 : 28,410,438.32 = 7,415,812.36 : x
  2. Step 2: Convert to fraction form
    18,931,773.16/28,410,438.32 = 7,415,812.36/x
  3. Step 3: Cross multiply
    18,931,773.16x = 28,410,438.32 × 7,415,812.36
  4. Step 4: Simplify right side
    18,931,773.16x = 210,686,479,646,473.66
  5. Step 5: Solve for x
    x = 210,686,479,646,473.66/18,931,773.16
  6. Step 6: Final answer
    x = 11,128,724.07

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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.