Home / 128,897,933.27-193,345,006.80-31,853,638.25

Finding the Fourth Proportional to 128,897,933.27, 193,345,006.80 and 31,853,638.25

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Solution

The fourth proportional to 128,897,933.27, 193,345,006.80 and 31,853,638.25 is: 47,779,989.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897,933.27 : 193,345,006.80 = 31,853,638.25 : x
  2. Step 2: Convert to fraction form
    128,897,933.27/193,345,006.80 = 31,853,638.25/x
  3. Step 3: Cross multiply
    128,897,933.27x = 193,345,006.80 × 31,853,638.25
  4. Step 4: Simplify right side
    128,897,933.27x = 6,158,741,904,050,990
  5. Step 5: Solve for x
    x = 6,158,741,904,050,990/128,897,933.27
  6. Step 6: Final answer
    x = 47,779,989.55

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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.