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Finding the Fourth Proportional to 472,628.80, 708,943.20 and 260,052.40

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Solution

The fourth proportional to 472,628.80, 708,943.20 and 260,052.40 is: 390,078.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,628.80 : 708,943.20 = 260,052.40 : x
  2. Step 2: Convert to fraction form
    472,628.80/708,943.20 = 260,052.40/x
  3. Step 3: Cross multiply
    472,628.80x = 708,943.20 × 260,052.40
  4. Step 4: Simplify right side
    472,628.80x = 184,362,380,623.68
  5. Step 5: Solve for x
    x = 184,362,380,623.68/472,628.80
  6. Step 6: Final answer
    x = 390,078.60

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Similar ratio
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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.