Home / 128,569,992.01-177,423,571.29-75,650,127.28

Finding the Fourth Proportional to 128,569,992.01, 177,423,571.29 and 75,650,127.28

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Solution

The fourth proportional to 128,569,992.01, 177,423,571.29 and 75,650,127.28 is: 104,395,400.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,569,992.01 : 177,423,571.29 = 75,650,127.28 : x
  2. Step 2: Convert to fraction form
    128,569,992.01/177,423,571.29 = 75,650,127.28/x
  3. Step 3: Cross multiply
    128,569,992.01x = 177,423,571.29 × 75,650,127.28
  4. Step 4: Simplify right side
    128,569,992.01x = 13,422,115,750,560,654
  5. Step 5: Solve for x
    x = 13,422,115,750,560,654/128,569,992.01
  6. Step 6: Final answer
    x = 104,395,400.05

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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.