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Finding the Fourth Proportional to 7,009,879.60, 9,828,003.20 and 7,009,879.60

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Solution

The fourth proportional to 7,009,879.60, 9,828,003.20 and 7,009,879.60 is: 9,828,003.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,009,879.60 : 9,828,003.20 = 7,009,879.60 : x
  2. Step 2: Convert to fraction form
    7,009,879.60/9,828,003.20 = 7,009,879.60/x
  3. Step 3: Cross multiply
    7,009,879.60x = 9,828,003.20 × 7,009,879.60
  4. Step 4: Simplify right side
    7,009,879.60x = 68,893,119,140,414.71
  5. Step 5: Solve for x
    x = 68,893,119,140,414.71/7,009,879.60
  6. Step 6: Final answer
    x = 9,828,003.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.