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Finding the Fourth Proportional to 5,001,318.74, 7,501,978.20 and 1,214,776.10

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Solution

The fourth proportional to 5,001,318.74, 7,501,978.20 and 1,214,776.10 is: 1,822,164.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,001,318.74 : 7,501,978.20 = 1,214,776.10 : x
  2. Step 2: Convert to fraction form
    5,001,318.74/7,501,978.20 = 1,214,776.10/x
  3. Step 3: Cross multiply
    5,001,318.74x = 7,501,978.20 × 1,214,776.10
  4. Step 4: Simplify right side
    5,001,318.74x = 9,113,223,843,391.38
  5. Step 5: Solve for x
    x = 9,113,223,843,391.38/5,001,318.74
  6. Step 6: Final answer
    x = 1,822,164.18

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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.