Home / 191,736,705.20-287,605,057.80-76,738,996.40

Finding the Fourth Proportional to 191,736,705.20, 287,605,057.80 and 76,738,996.40

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Solution

The fourth proportional to 191,736,705.20, 287,605,057.80 and 76,738,996.40 is: 115,108,494.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,736,705.20 : 287,605,057.80 = 76,738,996.40 : x
  2. Step 2: Convert to fraction form
    191,736,705.20/287,605,057.80 = 76,738,996.40/x
  3. Step 3: Cross multiply
    191,736,705.20x = 287,605,057.80 × 76,738,996.40
  4. Step 4: Simplify right side
    191,736,705.20x = 22,070,523,495,135,996
  5. Step 5: Solve for x
    x = 22,070,523,495,135,996/191,736,705.20
  6. Step 6: Final answer
    x = 115,108,494.60

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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.