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Finding the Fourth Proportional to 6,643,947.60, 9,307,825.20 and 6,643,947.60

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Solution

The fourth proportional to 6,643,947.60, 9,307,825.20 and 6,643,947.60 is: 9,307,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,643,947.60 : 9,307,825.20 = 6,643,947.60 : x
  2. Step 2: Convert to fraction form
    6,643,947.60/9,307,825.20 = 6,643,947.60/x
  3. Step 3: Cross multiply
    6,643,947.60x = 9,307,825.20 × 6,643,947.60
  4. Step 4: Simplify right side
    6,643,947.60x = 61,840,702,898,759.51
  5. Step 5: Solve for x
    x = 61,840,702,898,759.51/6,643,947.60
  6. Step 6: Final answer
    x = 9,307,825.20

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