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Finding the Fourth Proportional to 897,129.60, 1,345,694.40 and 613,694.40

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Solution

The fourth proportional to 897,129.60, 1,345,694.40 and 613,694.40 is: 920,541.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,129.60 : 1,345,694.40 = 613,694.40 : x
  2. Step 2: Convert to fraction form
    897,129.60/1,345,694.40 = 613,694.40/x
  3. Step 3: Cross multiply
    897,129.60x = 1,345,694.40 × 613,694.40
  4. Step 4: Simplify right side
    897,129.60x = 825,845,117,391.36
  5. Step 5: Solve for x
    x = 825,845,117,391.36/897,129.60
  6. Step 6: Final answer
    x = 920,541.60

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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.