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Finding the Fourth Proportional to 521,725.60, 782,895.60 and 189,258.40

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Solution

The fourth proportional to 521,725.60, 782,895.60 and 189,258.40 is: 283,999.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,725.60 : 782,895.60 = 189,258.40 : x
  2. Step 2: Convert to fraction form
    521,725.60/782,895.60 = 189,258.40/x
  3. Step 3: Cross multiply
    521,725.60x = 782,895.60 × 189,258.40
  4. Step 4: Simplify right side
    521,725.60x = 148,169,568,623.04
  5. Step 5: Solve for x
    x = 148,169,568,623.04/521,725.60
  6. Step 6: Final answer
    x = 283,999.04

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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.