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Finding the Fourth Proportional to 9,144,638.90, 12,785,698.30 and 9,144,638.90

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Solution

The fourth proportional to 9,144,638.90, 12,785,698.30 and 9,144,638.90 is: 12,785,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,144,638.90 : 12,785,698.30 = 9,144,638.90 : x
  2. Step 2: Convert to fraction form
    9,144,638.90/12,785,698.30 = 9,144,638.90/x
  3. Step 3: Cross multiply
    9,144,638.90x = 12,785,698.30 × 9,144,638.90
  4. Step 4: Simplify right side
    9,144,638.90x = 116,920,594,037,843.88
  5. Step 5: Solve for x
    x = 116,920,594,037,843.88/9,144,638.90
  6. Step 6: Final answer
    x = 12,785,698.30

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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.