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Finding the Fourth Proportional to 406,037.40, 609,228.90 and 256,392.60

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Solution

The fourth proportional to 406,037.40, 609,228.90 and 256,392.60 is: 384,698.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,037.40 : 609,228.90 = 256,392.60 : x
  2. Step 2: Convert to fraction form
    406,037.40/609,228.90 = 256,392.60/x
  3. Step 3: Cross multiply
    406,037.40x = 609,228.90 × 256,392.60
  4. Step 4: Simplify right side
    406,037.40x = 156,201,781,666.14
  5. Step 5: Solve for x
    x = 156,201,781,666.14/406,037.40
  6. Step 6: Final answer
    x = 384,698.01

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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.