Home / 128,776,605.10-193,164,907.65-77,632,297.90

Finding the Fourth Proportional to 128,776,605.10, 193,164,907.65 and 77,632,297.90

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Solution

The fourth proportional to 128,776,605.10, 193,164,907.65 and 77,632,297.90 is: 116,448,446.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,776,605.10 : 193,164,907.65 = 77,632,297.90 : x
  2. Step 2: Convert to fraction form
    128,776,605.10/193,164,907.65 = 77,632,297.90/x
  3. Step 3: Cross multiply
    128,776,605.10x = 193,164,907.65 × 77,632,297.90
  4. Step 4: Simplify right side
    128,776,605.10x = 14,995,835,654,510,790
  5. Step 5: Solve for x
    x = 14,995,835,654,510,790/128,776,605.10
  6. Step 6: Final answer
    x = 116,448,446.85

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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.