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Finding the Fourth Proportional to 472,632.80, 708,949.20 and 260,056.40

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Solution

The fourth proportional to 472,632.80, 708,949.20 and 260,056.40 is: 390,084.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,632.80 : 708,949.20 = 260,056.40 : x
  2. Step 2: Convert to fraction form
    472,632.80/708,949.20 = 260,056.40/x
  3. Step 3: Cross multiply
    472,632.80x = 708,949.20 × 260,056.40
  4. Step 4: Simplify right side
    472,632.80x = 184,366,776,734.88
  5. Step 5: Solve for x
    x = 184,366,776,734.88/472,632.80
  6. Step 6: Final answer
    x = 390,084.60

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Similar ratio
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1.5x scale

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.