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Finding the Fourth Proportional to 610,914.60, 916,809.30 and 256,183.20

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Solution

The fourth proportional to 610,914.60, 916,809.30 and 256,183.20 is: 384,458.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,914.60 : 916,809.30 = 256,183.20 : x
  2. Step 2: Convert to fraction form
    610,914.60/916,809.30 = 256,183.20/x
  3. Step 3: Cross multiply
    610,914.60x = 916,809.30 × 256,183.20
  4. Step 4: Simplify right side
    610,914.60x = 234,871,140,263.76
  5. Step 5: Solve for x
    x = 234,871,140,263.76/610,914.60
  6. Step 6: Final answer
    x = 384,458.22

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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.