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Finding the Fourth Proportional to 27,745,385.70, 38,907,312.90 and 27,745,385.70

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Solution

The fourth proportional to 27,745,385.70, 38,907,312.90 and 27,745,385.70 is: 38,907,312.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,745,385.70 : 38,907,312.90 = 27,745,385.70 : x
  2. Step 2: Convert to fraction form
    27,745,385.70/38,907,312.90 = 27,745,385.70/x
  3. Step 3: Cross multiply
    27,745,385.70x = 38,907,312.90 × 27,745,385.70
  4. Step 4: Simplify right side
    27,745,385.70x = 1,079,498,402,961,085.50
  5. Step 5: Solve for x
    x = 1,079,498,402,961,085.50/27,745,385.70
  6. Step 6: Final answer
    x = 38,907,312.90

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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.