Home / 128,897,935.22-193,345,009.70-31,853,640.20

Finding the Fourth Proportional to 128,897,935.22, 193,345,009.70 and 31,853,640.20

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Solution

The fourth proportional to 128,897,935.22, 193,345,009.70 and 31,853,640.20 is: 47,779,992.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897,935.22 : 193,345,009.70 = 31,853,640.20 : x
  2. Step 2: Convert to fraction form
    128,897,935.22/193,345,009.70 = 31,853,640.20/x
  3. Step 3: Cross multiply
    128,897,935.22x = 193,345,009.70 × 31,853,640.20
  4. Step 4: Simplify right side
    128,897,935.22x = 6,158,742,373,679,727
  5. Step 5: Solve for x
    x = 6,158,742,373,679,727/128,897,935.22
  6. Step 6: Final answer
    x = 47,779,992.47

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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.