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Finding the Fourth Proportional to 4,662,938.40, 6,994,407.60 and 1,297,145.40

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Solution

The fourth proportional to 4,662,938.40, 6,994,407.60 and 1,297,145.40 is: 1,945,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,662,938.40 : 6,994,407.60 = 1,297,145.40 : x
  2. Step 2: Convert to fraction form
    4,662,938.40/6,994,407.60 = 1,297,145.40/x
  3. Step 3: Cross multiply
    4,662,938.40x = 6,994,407.60 × 1,297,145.40
  4. Step 4: Simplify right side
    4,662,938.40x = 9,072,763,644,065.04
  5. Step 5: Solve for x
    x = 9,072,763,644,065.04/4,662,938.40
  6. Step 6: Final answer
    x = 1,945,718.10

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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.