Home / 191,678,765.28-287,415,855.51-99,469,662.12

Finding the Fourth Proportional to 191,678,765.28, 287,415,855.51 and 99,469,662.12

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Solution

The fourth proportional to 191,678,765.28, 287,415,855.51 and 99,469,662.12 is: 149,151,409.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,678,765.28 : 287,415,855.51 = 99,469,662.12 : x
  2. Step 2: Convert to fraction form
    191,678,765.28/287,415,855.51 = 99,469,662.12/x
  3. Step 3: Cross multiply
    191,678,765.28x = 287,415,855.51 × 99,469,662.12
  4. Step 4: Simplify right side
    191,678,765.28x = 28,589,158,035,510,440
  5. Step 5: Solve for x
    x = 28,589,158,035,510,440/191,678,765.28
  6. Step 6: Final answer
    x = 149,151,409.62

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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.