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Finding the Fourth Proportional to 5,001,319.18, 7,501,978.86 and 1,214,776.54

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Solution

The fourth proportional to 5,001,319.18, 7,501,978.86 and 1,214,776.54 is: 1,822,164.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,001,319.18 : 7,501,978.86 = 1,214,776.54 : x
  2. Step 2: Convert to fraction form
    5,001,319.18/7,501,978.86 = 1,214,776.54/x
  3. Step 3: Cross multiply
    5,001,319.18x = 7,501,978.86 × 1,214,776.54
  4. Step 4: Simplify right side
    5,001,319.18x = 9,113,227,922,703.95
  5. Step 5: Solve for x
    x = 9,113,227,922,703.95/5,001,319.18
  6. Step 6: Final answer
    x = 1,822,164.83

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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.