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Finding the Fourth Proportional to 18,368.43, 25,348.46 and 9,984.93

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Solution

The fourth proportional to 18,368.43, 25,348.46 and 9,984.93 is: 13,779.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,368.43 : 25,348.46 = 9,984.93 : x
  2. Step 2: Convert to fraction form
    18,368.43/25,348.46 = 9,984.93/x
  3. Step 3: Cross multiply
    18,368.43x = 25,348.46 × 9,984.93
  4. Step 4: Simplify right side
    18,368.43x = 253,102,548.78
  5. Step 5: Solve for x
    x = 253,102,548.78/18,368.43
  6. Step 6: Final answer
    x = 13,779.22

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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.