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Finding the Fourth Proportional to 535,639.66, 803,036.78 and 265,581.60

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Solution

The fourth proportional to 535,639.66, 803,036.78 and 265,581.60 is: 398,162.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,639.66 : 803,036.78 = 265,581.60 : x
  2. Step 2: Convert to fraction form
    535,639.66/803,036.78 = 265,581.60/x
  3. Step 3: Cross multiply
    535,639.66x = 803,036.78 × 265,581.60
  4. Step 4: Simplify right side
    535,639.66x = 213,271,792,891.25
  5. Step 5: Solve for x
    x = 213,271,792,891.25/535,639.66
  6. Step 6: Final answer
    x = 398,162.81

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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.