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Finding the Fourth Proportional to 18,957.94, 28,435.88 and 5,810.36

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Solution

The fourth proportional to 18,957.94, 28,435.88 and 5,810.36 is: 8,715.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.94 : 28,435.88 = 5,810.36 : x
  2. Step 2: Convert to fraction form
    18,957.94/28,435.88 = 5,810.36/x
  3. Step 3: Cross multiply
    18,957.94x = 28,435.88 × 5,810.36
  4. Step 4: Simplify right side
    18,957.94x = 165,222,699.72
  5. Step 5: Solve for x
    x = 165,222,699.72/18,957.94
  6. Step 6: Final answer
    x = 8,715.22

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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.