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Finding the Fourth Proportional to 19,325,276.80, 28,987,915.20 and 19,325,276.80

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Solution

The fourth proportional to 19,325,276.80, 28,987,915.20 and 19,325,276.80 is: 28,987,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,325,276.80 : 28,987,915.20 = 19,325,276.80 : x
  2. Step 2: Convert to fraction form
    19,325,276.80/28,987,915.20 = 19,325,276.80/x
  3. Step 3: Cross multiply
    19,325,276.80x = 28,987,915.20 × 19,325,276.80
  4. Step 4: Simplify right side
    19,325,276.80x = 560,199,485,094,927.38
  5. Step 5: Solve for x
    x = 560,199,485,094,927.38/19,325,276.80
  6. Step 6: Final answer
    x = 28,987,915.20

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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.