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Finding the Fourth Proportional to 7,381,804.70, 10,345,155.40 and 7,381,804.70

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Solution

The fourth proportional to 7,381,804.70, 10,345,155.40 and 7,381,804.70 is: 10,345,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381,804.70 : 10,345,155.40 = 7,381,804.70 : x
  2. Step 2: Convert to fraction form
    7,381,804.70/10,345,155.40 = 7,381,804.70/x
  3. Step 3: Cross multiply
    7,381,804.70x = 10,345,155.40 × 7,381,804.70
  4. Step 4: Simplify right side
    7,381,804.70x = 76,365,916,753,950.39
  5. Step 5: Solve for x
    x = 76,365,916,753,950.39/7,381,804.70
  6. Step 6: Final answer
    x = 10,345,155.40

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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.