Home / 128,897,936.28-193,345,011.30-31,853,641.26

Finding the Fourth Proportional to 128,897,936.28, 193,345,011.30 and 31,853,641.26

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Solution

The fourth proportional to 128,897,936.28, 193,345,011.30 and 31,853,641.26 is: 47,779,994.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897,936.28 : 193,345,011.30 = 31,853,641.26 : x
  2. Step 2: Convert to fraction form
    128,897,936.28/193,345,011.30 = 31,853,641.26/x
  3. Step 3: Cross multiply
    128,897,936.28x = 193,345,011.30 × 31,853,641.26
  4. Step 4: Simplify right side
    128,897,936.28x = 6,158,742,629,360,847
  5. Step 5: Solve for x
    x = 6,158,742,629,360,847/128,897,936.28
  6. Step 6: Final answer
    x = 47,779,994.06

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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.