Home / 128,897,935.77-193,345,010.55-31,853,640.75

Finding the Fourth Proportional to 128,897,935.77, 193,345,010.55 and 31,853,640.75

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Solution

The fourth proportional to 128,897,935.77, 193,345,010.55 and 31,853,640.75 is: 47,779,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897,935.77 : 193,345,010.55 = 31,853,640.75 : x
  2. Step 2: Convert to fraction form
    128,897,935.77/193,345,010.55 = 31,853,640.75/x
  3. Step 3: Cross multiply
    128,897,935.77x = 193,345,010.55 × 31,853,640.75
  4. Step 4: Simplify right side
    128,897,935.77x = 6,158,742,506,864,660
  5. Step 5: Solve for x
    x = 6,158,742,506,864,660/128,897,935.77
  6. Step 6: Final answer
    x = 47,779,993.30

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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.