Home / 77,038,816,169.82-105,936,568,367.22-66,859,872,280.68

Finding the Fourth Proportional to 77,038,816,169.82, 105,936,568,367.22 and 66,859,872,280.68

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Solution

The fourth proportional to 77,038,816,169.82, 105,936,568,367.22 and 66,859,872,280.68 is: 91,939,437,585.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,038,816,169.82 : 105,936,568,367.22 = 66,859,872,280.68 : x
  2. Step 2: Convert to fraction form
    77,038,816,169.82/105,936,568,367.22 = 66,859,872,280.68/x
  3. Step 3: Cross multiply
    77,038,816,169.82x = 105,936,568,367.22 × 66,859,872,280.68
  4. Step 4: Simplify right side
    77,038,816,169.82x = 7,082,905,430,885,854,609,408
  5. Step 5: Solve for x
    x = 7,082,905,430,885,854,609,408/77,038,816,169.82
  6. Step 6: Final answer
    x = 91,939,437,585.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.