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Finding the Fourth Proportional to 60,440,232.80, 90,467,455.80 and 47,685,648.80

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Solution

The fourth proportional to 60,440,232.80, 90,467,455.80 and 47,685,648.80 is: 71,376,285.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,440,232.80 : 90,467,455.80 = 47,685,648.80 : x
  2. Step 2: Convert to fraction form
    60,440,232.80/90,467,455.80 = 47,685,648.80/x
  3. Step 3: Cross multiply
    60,440,232.80x = 90,467,455.80 × 47,685,648.80
  4. Step 4: Simplify right side
    60,440,232.80x = 4,313,999,325,108,322.50
  5. Step 5: Solve for x
    x = 4,313,999,325,108,322.50/60,440,232.80
  6. Step 6: Final answer
    x = 71,376,285.72

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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.