Home / 261,210,622.92-391,872,621.45-79,453,077

Finding the Fourth Proportional to 261,210,622.92, 391,872,621.45 and 79,453,077

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Solution

The fourth proportional to 261,210,622.92, 391,872,621.45 and 79,453,077 is: 119,196,858.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,210,622.92 : 391,872,621.45 = 79,453,077 : x
  2. Step 2: Convert to fraction form
    261,210,622.92/391,872,621.45 = 79,453,077/x
  3. Step 3: Cross multiply
    261,210,622.92x = 391,872,621.45 × 79,453,077
  4. Step 4: Simplify right side
    261,210,622.92x = 31,135,485,566,258,700
  5. Step 5: Solve for x
    x = 31,135,485,566,258,700/261,210,622.92
  6. Step 6: Final answer
    x = 119,196,858.15

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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.