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Finding the Fourth Proportional to 410,320.40, 615,480.60 and 189,136.40

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Solution

The fourth proportional to 410,320.40, 615,480.60 and 189,136.40 is: 283,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,320.40 : 615,480.60 = 189,136.40 : x
  2. Step 2: Convert to fraction form
    410,320.40/615,480.60 = 189,136.40/x
  3. Step 3: Cross multiply
    410,320.40x = 615,480.60 × 189,136.40
  4. Step 4: Simplify right side
    410,320.40x = 116,409,784,953.84
  5. Step 5: Solve for x
    x = 116,409,784,953.84/410,320.40
  6. Step 6: Final answer
    x = 283,704.60

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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.