Home / 85,696,871.29-128,528,568.69-27,388,908.55

Finding the Fourth Proportional to 85,696,871.29, 128,528,568.69 and 27,388,908.55

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Solution

The fourth proportional to 85,696,871.29, 128,528,568.69 and 27,388,908.55 is: 41,078,013.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,696,871.29 : 128,528,568.69 = 27,388,908.55 : x
  2. Step 2: Convert to fraction form
    85,696,871.29/128,528,568.69 = 27,388,908.55/x
  3. Step 3: Cross multiply
    85,696,871.29x = 128,528,568.69 × 27,388,908.55
  4. Step 4: Simplify right side
    85,696,871.29x = 3,520,257,213,912,803.50
  5. Step 5: Solve for x
    x = 3,520,257,213,912,803.50/85,696,871.29
  6. Step 6: Final answer
    x = 41,078,013.25

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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.