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Finding the Fourth Proportional to 7,285,738.20, 10,214,963.40 and 7,285,738.20

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Solution

The fourth proportional to 7,285,738.20, 10,214,963.40 and 7,285,738.20 is: 10,214,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,285,738.20 : 10,214,963.40 = 7,285,738.20 : x
  2. Step 2: Convert to fraction form
    7,285,738.20/10,214,963.40 = 7,285,738.20/x
  3. Step 3: Cross multiply
    7,285,738.20x = 10,214,963.40 × 7,285,738.20
  4. Step 4: Simplify right side
    7,285,738.20x = 74,423,549,054,981.89
  5. Step 5: Solve for x
    x = 74,423,549,054,981.89/7,285,738.20
  6. Step 6: Final answer
    x = 10,214,963.40

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Double scale
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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.