Home / 129,357,392.16-178,512,778.44-70,620,780

Finding the Fourth Proportional to 129,357,392.16, 178,512,778.44 and 70,620,780

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Solution

The fourth proportional to 129,357,392.16, 178,512,778.44 and 70,620,780 is: 97,456,445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,357,392.16 : 178,512,778.44 = 70,620,780 : x
  2. Step 2: Convert to fraction form
    129,357,392.16/178,512,778.44 = 70,620,780/x
  3. Step 3: Cross multiply
    129,357,392.16x = 178,512,778.44 × 70,620,780
  4. Step 4: Simplify right side
    129,357,392.16x = 12,606,711,653,399,984
  5. Step 5: Solve for x
    x = 12,606,711,653,399,984/129,357,392.16
  6. Step 6: Final answer
    x = 97,456,445.61

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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.