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Finding the Fourth Proportional to 72,893,973.75, 100,595,783.30 and 40,301,025.27

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Solution

The fourth proportional to 72,893,973.75, 100,595,783.30 and 40,301,025.27 is: 55,616,575.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,893,973.75 : 100,595,783.30 = 40,301,025.27 : x
  2. Step 2: Convert to fraction form
    72,893,973.75/100,595,783.30 = 40,301,025.27/x
  3. Step 3: Cross multiply
    72,893,973.75x = 100,595,783.30 × 40,301,025.27
  4. Step 4: Simplify right side
    72,893,973.75x = 4,054,113,204,627,239.50
  5. Step 5: Solve for x
    x = 4,054,113,204,627,239.50/72,893,973.75
  6. Step 6: Final answer
    x = 55,616,575.64

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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.