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Finding the Fourth Proportional to 460,186.60, 690,378.46 and 260,601.32

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Solution

The fourth proportional to 460,186.60, 690,378.46 and 260,601.32 is: 390,957.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,186.60 : 690,378.46 = 260,601.32 : x
  2. Step 2: Convert to fraction form
    460,186.60/690,378.46 = 260,601.32/x
  3. Step 3: Cross multiply
    460,186.60x = 690,378.46 × 260,601.32
  4. Step 4: Simplify right side
    460,186.60x = 179,913,537,975.57
  5. Step 5: Solve for x
    x = 179,913,537,975.57/460,186.60
  6. Step 6: Final answer
    x = 390,957.79

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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.