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Finding the Fourth Proportional to 656,303.40, 984,564.45 and 256,957.20

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Solution

The fourth proportional to 656,303.40, 984,564.45 and 256,957.20 is: 385,478.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,303.40 : 984,564.45 = 256,957.20 : x
  2. Step 2: Convert to fraction form
    656,303.40/984,564.45 = 256,957.20/x
  3. Step 3: Cross multiply
    656,303.40x = 984,564.45 × 256,957.20
  4. Step 4: Simplify right side
    656,303.40x = 252,990,924,291.54
  5. Step 5: Solve for x
    x = 252,990,924,291.54/656,303.40
  6. Step 6: Final answer
    x = 385,478.61

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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.