Home / 128,434,610.25-177,243,705.18-75,501,610.47

Finding the Fourth Proportional to 128,434,610.25, 177,243,705.18 and 75,501,610.47

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Solution

The fourth proportional to 128,434,610.25, 177,243,705.18 and 75,501,610.47 is: 104,194,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,434,610.25 : 177,243,705.18 = 75,501,610.47 : x
  2. Step 2: Convert to fraction form
    128,434,610.25/177,243,705.18 = 75,501,610.47/x
  3. Step 3: Cross multiply
    128,434,610.25x = 177,243,705.18 × 75,501,610.47
  4. Step 4: Simplify right side
    128,434,610.25x = 13,382,185,186,759,882
  5. Step 5: Solve for x
    x = 13,382,185,186,759,882/128,434,610.25
  6. Step 6: Final answer
    x = 104,194,540.40

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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.