Home / 82,010,146.80-123,015,220.20-66,084,898.80

Finding the Fourth Proportional to 82,010,146.80, 123,015,220.20 and 66,084,898.80

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Solution

The fourth proportional to 82,010,146.80, 123,015,220.20 and 66,084,898.80 is: 99,127,348.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,010,146.80 : 123,015,220.20 = 66,084,898.80 : x
  2. Step 2: Convert to fraction form
    82,010,146.80/123,015,220.20 = 66,084,898.80/x
  3. Step 3: Cross multiply
    82,010,146.80x = 123,015,220.20 × 66,084,898.80
  4. Step 4: Simplify right side
    82,010,146.80x = 8,129,448,377,776,716
  5. Step 5: Solve for x
    x = 8,129,448,377,776,716/82,010,146.80
  6. Step 6: Final answer
    x = 99,127,348.20

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1.5x scale

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.