Home / 128,802,938.40-193,137,922.80-37,914,717.60

Finding the Fourth Proportional to 128,802,938.40, 193,137,922.80 and 37,914,717.60

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Solution

The fourth proportional to 128,802,938.40, 193,137,922.80 and 37,914,717.60 is: 56,852,505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,802,938.40 : 193,137,922.80 = 37,914,717.60 : x
  2. Step 2: Convert to fraction form
    128,802,938.40/193,137,922.80 = 37,914,717.60/x
  3. Step 3: Cross multiply
    128,802,938.40x = 193,137,922.80 × 37,914,717.60
  4. Step 4: Simplify right side
    128,802,938.40x = 7,322,769,800,812,602
  5. Step 5: Solve for x
    x = 7,322,769,800,812,602/128,802,938.40
  6. Step 6: Final answer
    x = 56,852,505.79

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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.