Home / 129,228,904.05-178,337,025.73-70,491,830.39

Finding the Fourth Proportional to 129,228,904.05, 178,337,025.73 and 70,491,830.39

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Solution

The fourth proportional to 129,228,904.05, 178,337,025.73 and 70,491,830.39 is: 97,279,346.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,228,904.05 : 178,337,025.73 = 70,491,830.39 : x
  2. Step 2: Convert to fraction form
    129,228,904.05/178,337,025.73 = 70,491,830.39/x
  3. Step 3: Cross multiply
    129,228,904.05x = 178,337,025.73 × 70,491,830.39
  4. Step 4: Simplify right side
    129,228,904.05x = 12,571,303,370,016,226
  5. Step 5: Solve for x
    x = 12,571,303,370,016,226/129,228,904.05
  6. Step 6: Final answer
    x = 97,279,346.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.