Home / 193,547,999.70-290,321,999.55-78,587,615.70

Finding the Fourth Proportional to 193,547,999.70, 290,321,999.55 and 78,587,615.70

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Solution

The fourth proportional to 193,547,999.70, 290,321,999.55 and 78,587,615.70 is: 117,881,423.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,547,999.70 : 290,321,999.55 = 78,587,615.70 : x
  2. Step 2: Convert to fraction form
    193,547,999.70/290,321,999.55 = 78,587,615.70/x
  3. Step 3: Cross multiply
    193,547,999.70x = 290,321,999.55 × 78,587,615.70
  4. Step 4: Simplify right side
    193,547,999.70x = 22,815,713,729,890,976
  5. Step 5: Solve for x
    x = 22,815,713,729,890,976/193,547,999.70
  6. Step 6: Final answer
    x = 117,881,423.55

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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.