Home / 128,897,930.77-193,345,003.05-31,853,635.75

Finding the Fourth Proportional to 128,897,930.77, 193,345,003.05 and 31,853,635.75

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Solution

The fourth proportional to 128,897,930.77, 193,345,003.05 and 31,853,635.75 is: 47,779,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897,930.77 : 193,345,003.05 = 31,853,635.75 : x
  2. Step 2: Convert to fraction form
    128,897,930.77/193,345,003.05 = 31,853,635.75/x
  3. Step 3: Cross multiply
    128,897,930.77x = 193,345,003.05 × 31,853,635.75
  4. Step 4: Simplify right side
    128,897,930.77x = 6,158,741,301,237,339
  5. Step 5: Solve for x
    x = 6,158,741,301,237,339/128,897,930.77
  6. Step 6: Final answer
    x = 47,779,985.80

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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.