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Finding the Fourth Proportional to 512,569.20, 768,853.80 and 197,036.40

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Solution

The fourth proportional to 512,569.20, 768,853.80 and 197,036.40 is: 295,554.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,569.20 : 768,853.80 = 197,036.40 : x
  2. Step 2: Convert to fraction form
    512,569.20/768,853.80 = 197,036.40/x
  3. Step 3: Cross multiply
    512,569.20x = 768,853.80 × 197,036.40
  4. Step 4: Simplify right side
    512,569.20x = 151,492,184,878.32
  5. Step 5: Solve for x
    x = 151,492,184,878.32/512,569.20
  6. Step 6: Final answer
    x = 295,554.60

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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.