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Finding the Fourth Proportional to 691,495.76, 954,260.60 and 401,166.05

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Solution

The fourth proportional to 691,495.76, 954,260.60 and 401,166.05 is: 553,607.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,495.76 : 954,260.60 = 401,166.05 : x
  2. Step 2: Convert to fraction form
    691,495.76/954,260.60 = 401,166.05/x
  3. Step 3: Cross multiply
    691,495.76x = 954,260.60 × 401,166.05
  4. Step 4: Simplify right side
    691,495.76x = 382,816,948,795.50
  5. Step 5: Solve for x
    x = 382,816,948,795.50/691,495.76
  6. Step 6: Final answer
    x = 553,607.08

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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.