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Finding the Fourth Proportional to 6,916,678.08, 9,544,978.56 and 4,016,781.12

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Solution

The fourth proportional to 6,916,678.08, 9,544,978.56 and 4,016,781.12 is: 5,543,136.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,916,678.08 : 9,544,978.56 = 4,016,781.12 : x
  2. Step 2: Convert to fraction form
    6,916,678.08/9,544,978.56 = 4,016,781.12/x
  3. Step 3: Cross multiply
    6,916,678.08x = 9,544,978.56 × 4,016,781.12
  4. Step 4: Simplify right side
    6,916,678.08x = 38,340,089,670,612.79
  5. Step 5: Solve for x
    x = 38,340,089,670,612.79/6,916,678.08
  6. Step 6: Final answer
    x = 5,543,136.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.