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Finding the Fourth Proportional to 8,618,751.86, 11,893,913.60 and 4,751,188.16

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Solution

The fourth proportional to 8,618,751.86, 11,893,913.60 and 4,751,188.16 is: 6,556,659.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618,751.86 : 11,893,913.60 = 4,751,188.16 : x
  2. Step 2: Convert to fraction form
    8,618,751.86/11,893,913.60 = 4,751,188.16/x
  3. Step 3: Cross multiply
    8,618,751.86x = 11,893,913.60 × 4,751,188.16
  4. Step 4: Simplify right side
    8,618,751.86x = 56,510,221,389,157.48
  5. Step 5: Solve for x
    x = 56,510,221,389,157.48/8,618,751.86
  6. Step 6: Final answer
    x = 6,556,659.52

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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.