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Finding the Fourth Proportional to 74,889,606.80, 112,334,410.20 and 42,529,005.20

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Solution

The fourth proportional to 74,889,606.80, 112,334,410.20 and 42,529,005.20 is: 63,793,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,889,606.80 : 112,334,410.20 = 42,529,005.20 : x
  2. Step 2: Convert to fraction form
    74,889,606.80/112,334,410.20 = 42,529,005.20/x
  3. Step 3: Cross multiply
    74,889,606.80x = 112,334,410.20 × 42,529,005.20
  4. Step 4: Simplify right side
    74,889,606.80x = 4,777,470,715,534,734
  5. Step 5: Solve for x
    x = 4,777,470,715,534,734/74,889,606.80
  6. Step 6: Final answer
    x = 63,793,507.80

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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.