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Finding the Fourth Proportional to 3,312.51, 4,571.69 and 1,914.99

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Solution

The fourth proportional to 3,312.51, 4,571.69 and 1,914.99 is: 2,642.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.51 : 4,571.69 = 1,914.99 : x
  2. Step 2: Convert to fraction form
    3,312.51/4,571.69 = 1,914.99/x
  3. Step 3: Cross multiply
    3,312.51x = 4,571.69 × 1,914.99
  4. Step 4: Simplify right side
    3,312.51x = 8,754,731.06
  5. Step 5: Solve for x
    x = 8,754,731.06/3,312.51
  6. Step 6: Final answer
    x = 2,642.93

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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.