Home / 129,555,403.76-178,786,465.56-70,818,301.28

Finding the Fourth Proportional to 129,555,403.76, 178,786,465.56 and 70,818,301.28

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Solution

The fourth proportional to 129,555,403.76, 178,786,465.56 and 70,818,301.28 is: 97,729,260.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,555,403.76 : 178,786,465.56 = 70,818,301.28 : x
  2. Step 2: Convert to fraction form
    129,555,403.76/178,786,465.56 = 70,818,301.28/x
  3. Step 3: Cross multiply
    129,555,403.76x = 178,786,465.56 × 70,818,301.28
  4. Step 4: Simplify right side
    129,555,403.76x = 12,661,353,782,814,424
  5. Step 5: Solve for x
    x = 12,661,353,782,814,424/129,555,403.76
  6. Step 6: Final answer
    x = 97,729,260.34

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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.