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Finding the Fourth Proportional to 25,986.63, 38,970.27 and 9,342.12

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Solution

The fourth proportional to 25,986.63, 38,970.27 and 9,342.12 is: 14,009.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,986.63 : 38,970.27 = 9,342.12 : x
  2. Step 2: Convert to fraction form
    25,986.63/38,970.27 = 9,342.12/x
  3. Step 3: Cross multiply
    25,986.63x = 38,970.27 × 9,342.12
  4. Step 4: Simplify right side
    25,986.63x = 364,064,938.77
  5. Step 5: Solve for x
    x = 364,064,938.77/25,986.63
  6. Step 6: Final answer
    x = 14,009.70

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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.