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Finding the Fourth Proportional to 556,441.60, 768,286.56 and 439,981.60

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Solution

The fourth proportional to 556,441.60, 768,286.56 and 439,981.60 is: 607,488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,441.60 : 768,286.56 = 439,981.60 : x
  2. Step 2: Convert to fraction form
    556,441.60/768,286.56 = 439,981.60/x
  3. Step 3: Cross multiply
    556,441.60x = 768,286.56 × 439,981.60
  4. Step 4: Simplify right side
    556,441.60x = 338,031,949,927.30
  5. Step 5: Solve for x
    x = 338,031,949,927.30/556,441.60
  6. Step 6: Final answer
    x = 607,488.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.