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Finding the Fourth Proportional to 286,960.80, 430,635.60 and 186,877.20

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Solution

The fourth proportional to 286,960.80, 430,635.60 and 186,877.20 is: 280,442.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,960.80 : 430,635.60 = 186,877.20 : x
  2. Step 2: Convert to fraction form
    286,960.80/430,635.60 = 186,877.20/x
  3. Step 3: Cross multiply
    286,960.80x = 430,635.60 × 186,877.20
  4. Step 4: Simplify right side
    286,960.80x = 80,475,975,148.32
  5. Step 5: Solve for x
    x = 80,475,975,148.32/286,960.80
  6. Step 6: Final answer
    x = 280,442.40

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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.