Home / 193,684,820.40-290,605,087.80-78,678,363.60

Finding the Fourth Proportional to 193,684,820.40, 290,605,087.80 and 78,678,363.60

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Solution

The fourth proportional to 193,684,820.40, 290,605,087.80 and 78,678,363.60 is: 118,049,172.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,684,820.40 : 290,605,087.80 = 78,678,363.60 : x
  2. Step 2: Convert to fraction form
    193,684,820.40/290,605,087.80 = 78,678,363.60/x
  3. Step 3: Cross multiply
    193,684,820.40x = 290,605,087.80 × 78,678,363.60
  4. Step 4: Simplify right side
    193,684,820.40x = 22,864,332,761,938,324
  5. Step 5: Solve for x
    x = 22,864,332,761,938,324/193,684,820.40
  6. Step 6: Final answer
    x = 118,049,172.44

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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.