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Finding the Fourth Proportional to 12,948,076.80, 19,384,790.40 and 12,948,076.80

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Solution

The fourth proportional to 12,948,076.80, 19,384,790.40 and 12,948,076.80 is: 19,384,790.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,948,076.80 : 19,384,790.40 = 12,948,076.80 : x
  2. Step 2: Convert to fraction form
    12,948,076.80/19,384,790.40 = 12,948,076.80/x
  3. Step 3: Cross multiply
    12,948,076.80x = 19,384,790.40 × 12,948,076.80
  4. Step 4: Simplify right side
    12,948,076.80x = 250,995,754,851,102.72
  5. Step 5: Solve for x
    x = 250,995,754,851,102.72/12,948,076.80
  6. Step 6: Final answer
    x = 19,384,790.40

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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.