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Finding the Fourth Proportional to 611,944.76, 918,276.72 and 256,931.48

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Solution

The fourth proportional to 611,944.76, 918,276.72 and 256,931.48 is: 385,548.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,944.76 : 918,276.72 = 256,931.48 : x
  2. Step 2: Convert to fraction form
    611,944.76/918,276.72 = 256,931.48/x
  3. Step 3: Cross multiply
    611,944.76x = 918,276.72 × 256,931.48
  4. Step 4: Simplify right side
    611,944.76x = 235,934,196,719.15
  5. Step 5: Solve for x
    x = 235,934,196,719.15/611,944.76
  6. Step 6: Final answer
    x = 385,548.19

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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.