Home / 128,699,834.94-177,595,205.67-75,768,136.38

Finding the Fourth Proportional to 128,699,834.94, 177,595,205.67 and 75,768,136.38

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Solution

The fourth proportional to 128,699,834.94, 177,595,205.67 and 75,768,136.38 is: 104,553,807.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,699,834.94 : 177,595,205.67 = 75,768,136.38 : x
  2. Step 2: Convert to fraction form
    128,699,834.94/177,595,205.67 = 75,768,136.38/x
  3. Step 3: Cross multiply
    128,699,834.94x = 177,595,205.67 × 75,768,136.38
  4. Step 4: Simplify right side
    128,699,834.94x = 13,456,057,763,638,708
  5. Step 5: Solve for x
    x = 13,456,057,763,638,708/128,699,834.94
  6. Step 6: Final answer
    x = 104,553,807.47

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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.