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Finding the Fourth Proportional to 27,926.40, 39,148.80 and 27,926.40

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Solution

The fourth proportional to 27,926.40, 39,148.80 and 27,926.40 is: 39,148.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,926.40 : 39,148.80 = 27,926.40 : x
  2. Step 2: Convert to fraction form
    27,926.40/39,148.80 = 27,926.40/x
  3. Step 3: Cross multiply
    27,926.40x = 39,148.80 × 27,926.40
  4. Step 4: Simplify right side
    27,926.40x = 1,093,285,048.32
  5. Step 5: Solve for x
    x = 1,093,285,048.32/27,926.40
  6. Step 6: Final answer
    x = 39,148.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.