Home / 128,858,325.16-177,824,517.72-70,911,573.16

Finding the Fourth Proportional to 128,858,325.16, 177,824,517.72 and 70,911,573.16

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Solution

The fourth proportional to 128,858,325.16, 177,824,517.72 and 70,911,573.16 is: 97,857,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,858,325.16 : 177,824,517.72 = 70,911,573.16 : x
  2. Step 2: Convert to fraction form
    128,858,325.16/177,824,517.72 = 70,911,573.16/x
  3. Step 3: Cross multiply
    128,858,325.16x = 177,824,517.72 × 70,911,573.16
  4. Step 4: Simplify right side
    128,858,325.16x = 12,609,816,297,943,496
  5. Step 5: Solve for x
    x = 12,609,816,297,943,496/128,858,325.16
  6. Step 6: Final answer
    x = 97,857,986.92

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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.