Home / 129,288,500.96-178,421,917.12-70,554,950.64

Finding the Fourth Proportional to 129,288,500.96, 178,421,917.12 and 70,554,950.64

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Solution

The fourth proportional to 129,288,500.96, 178,421,917.12 and 70,554,950.64 is: 97,367,897.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,288,500.96 : 178,421,917.12 = 70,554,950.64 : x
  2. Step 2: Convert to fraction form
    129,288,500.96/178,421,917.12 = 70,554,950.64/x
  3. Step 3: Cross multiply
    129,288,500.96x = 178,421,917.12 × 70,554,950.64
  4. Step 4: Simplify right side
    129,288,500.96x = 12,588,549,555,495,772
  5. Step 5: Solve for x
    x = 12,588,549,555,495,772/129,288,500.96
  6. Step 6: Final answer
    x = 97,367,897.86

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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.