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Finding the Fourth Proportional to 280,383.29, 386,935.57 and 153,059.79

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Solution

The fourth proportional to 280,383.29, 386,935.57 and 153,059.79 is: 211,226.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,383.29 : 386,935.57 = 153,059.79 : x
  2. Step 2: Convert to fraction form
    280,383.29/386,935.57 = 153,059.79/x
  3. Step 3: Cross multiply
    280,383.29x = 386,935.57 × 153,059.79
  4. Step 4: Simplify right side
    280,383.29x = 59,224,276,322.43
  5. Step 5: Solve for x
    x = 59,224,276,322.43/280,383.29
  6. Step 6: Final answer
    x = 211,226.13

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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.