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Finding the Fourth Proportional to 610,917.60, 916,813.80 and 256,186.20

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Solution

The fourth proportional to 610,917.60, 916,813.80 and 256,186.20 is: 384,462.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,917.60 : 916,813.80 = 256,186.20 : x
  2. Step 2: Convert to fraction form
    610,917.60/916,813.80 = 256,186.20/x
  3. Step 3: Cross multiply
    610,917.60x = 916,813.80 × 256,186.20
  4. Step 4: Simplify right side
    610,917.60x = 234,875,043,529.56
  5. Step 5: Solve for x
    x = 234,875,043,529.56/610,917.60
  6. Step 6: Final answer
    x = 384,462.72

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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.