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Finding the Fourth Proportional to 14,074,503.20, 21,111,754.80 and 12,562,848.80

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Solution

The fourth proportional to 14,074,503.20, 21,111,754.80 and 12,562,848.80 is: 18,844,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,074,503.20 : 21,111,754.80 = 12,562,848.80 : x
  2. Step 2: Convert to fraction form
    14,074,503.20/21,111,754.80 = 12,562,848.80/x
  3. Step 3: Cross multiply
    14,074,503.20x = 21,111,754.80 × 12,562,848.80
  4. Step 4: Simplify right side
    14,074,503.20x = 265,223,783,455,074.25
  5. Step 5: Solve for x
    x = 265,223,783,455,074.25/14,074,503.20
  6. Step 6: Final answer
    x = 18,844,273.20

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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.