Home / 13,709,953.62-18,919,007.73-7,908,390.18

Finding the Fourth Proportional to 13,709,953.62, 18,919,007.73 and 7,908,390.18

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Solution

The fourth proportional to 13,709,953.62, 18,919,007.73 and 7,908,390.18 is: 10,913,158.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709,953.62 : 18,919,007.73 = 7,908,390.18 : x
  2. Step 2: Convert to fraction form
    13,709,953.62/18,919,007.73 = 7,908,390.18/x
  3. Step 3: Cross multiply
    13,709,953.62x = 18,919,007.73 × 7,908,390.18
  4. Step 4: Simplify right side
    13,709,953.62x = 149,618,894,947,276.09
  5. Step 5: Solve for x
    x = 149,618,894,947,276.09/13,709,953.62
  6. Step 6: Final answer
    x = 10,913,158.36

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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.