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Finding the Fourth Proportional to 10,470,415.20, 15,705,622.80 and 10,470,415.20

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Solution

The fourth proportional to 10,470,415.20, 15,705,622.80 and 10,470,415.20 is: 15,705,622.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,470,415.20 : 15,705,622.80 = 10,470,415.20 : x
  2. Step 2: Convert to fraction form
    10,470,415.20/15,705,622.80 = 10,470,415.20/x
  3. Step 3: Cross multiply
    10,470,415.20x = 15,705,622.80 × 10,470,415.20
  4. Step 4: Simplify right side
    10,470,415.20x = 164,444,391,690,586.56
  5. Step 5: Solve for x
    x = 164,444,391,690,586.56/10,470,415.20
  6. Step 6: Final answer
    x = 15,705,622.80

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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.