Home / 85,543,230.80-128,314,846.20-39,485,010.80

Finding the Fourth Proportional to 85,543,230.80, 128,314,846.20 and 39,485,010.80

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Solution

The fourth proportional to 85,543,230.80, 128,314,846.20 and 39,485,010.80 is: 59,227,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,543,230.80 : 128,314,846.20 = 39,485,010.80 : x
  2. Step 2: Convert to fraction form
    85,543,230.80/128,314,846.20 = 39,485,010.80/x
  3. Step 3: Cross multiply
    85,543,230.80x = 128,314,846.20 × 39,485,010.80
  4. Step 4: Simplify right side
    85,543,230.80x = 5,066,513,088,007,339
  5. Step 5: Solve for x
    x = 5,066,513,088,007,339/85,543,230.80
  6. Step 6: Final answer
    x = 59,227,516.20

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Double scale
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Similar ratio
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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.