Home / 128,667,007.80-192,953,790.90-70,417,735.38

Finding the Fourth Proportional to 128,667,007.80, 192,953,790.90 and 70,417,735.38

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Solution

The fourth proportional to 128,667,007.80, 192,953,790.90 and 70,417,735.38 is: 105,601,033.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,667,007.80 : 192,953,790.90 = 70,417,735.38 : x
  2. Step 2: Convert to fraction form
    128,667,007.80/192,953,790.90 = 70,417,735.38/x
  3. Step 3: Cross multiply
    128,667,007.80x = 192,953,790.90 × 70,417,735.38
  4. Step 4: Simplify right side
    128,667,007.80x = 13,587,368,988,164,052
  5. Step 5: Solve for x
    x = 13,587,368,988,164,052/128,667,007.80
  6. Step 6: Final answer
    x = 105,601,033.40

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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.