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Finding the Fourth Proportional to 3,603,840.64, 4,973,344.32 and 1,994,358.40

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Solution

The fourth proportional to 3,603,840.64, 4,973,344.32 and 1,994,358.40 is: 2,752,239.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603,840.64 : 4,973,344.32 = 1,994,358.40 : x
  2. Step 2: Convert to fraction form
    3,603,840.64/4,973,344.32 = 1,994,358.40/x
  3. Step 3: Cross multiply
    3,603,840.64x = 4,973,344.32 × 1,994,358.40
  4. Step 4: Simplify right side
    3,603,840.64x = 9,918,631,020,684.29
  5. Step 5: Solve for x
    x = 9,918,631,020,684.29/3,603,840.64
  6. Step 6: Final answer
    x = 2,752,239.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.