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Finding the Fourth Proportional to 1,872,905.60, 2,809,747.20 and 610,828.40

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Solution

The fourth proportional to 1,872,905.60, 2,809,747.20 and 610,828.40 is: 916,369.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872,905.60 : 2,809,747.20 = 610,828.40 : x
  2. Step 2: Convert to fraction form
    1,872,905.60/2,809,747.20 = 610,828.40/x
  3. Step 3: Cross multiply
    1,872,905.60x = 2,809,747.20 × 610,828.40
  4. Step 4: Simplify right side
    1,872,905.60x = 1,716,273,386,580.48
  5. Step 5: Solve for x
    x = 1,716,273,386,580.48/1,872,905.60
  6. Step 6: Final answer
    x = 916,369.40

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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.