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Finding the Fourth Proportional to 445,564.40, 668,346.60 and 256,607.60

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Solution

The fourth proportional to 445,564.40, 668,346.60 and 256,607.60 is: 384,911.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,564.40 : 668,346.60 = 256,607.60 : x
  2. Step 2: Convert to fraction form
    445,564.40/668,346.60 = 256,607.60/x
  3. Step 3: Cross multiply
    445,564.40x = 668,346.60 × 256,607.60
  4. Step 4: Simplify right side
    445,564.40x = 171,502,816,994.16
  5. Step 5: Solve for x
    x = 171,502,816,994.16/445,564.40
  6. Step 6: Final answer
    x = 384,911.40

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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.