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Finding the Fourth Proportional to 401,179.32, 553,688.44 and 256,047.76

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Solution

The fourth proportional to 401,179.32, 553,688.44 and 256,047.76 is: 353,384.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,179.32 : 553,688.44 = 256,047.76 : x
  2. Step 2: Convert to fraction form
    401,179.32/553,688.44 = 256,047.76/x
  3. Step 3: Cross multiply
    401,179.32x = 553,688.44 × 256,047.76
  4. Step 4: Simplify right side
    401,179.32x = 141,770,684,799.89
  5. Step 5: Solve for x
    x = 141,770,684,799.89/401,179.32
  6. Step 6: Final answer
    x = 353,384.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.