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Finding the Fourth Proportional to 256,913.52, 384,871.59 and 189,322.89

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Solution

The fourth proportional to 256,913.52, 384,871.59 and 189,322.89 is: 283,616.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,913.52 : 384,871.59 = 189,322.89 : x
  2. Step 2: Convert to fraction form
    256,913.52/384,871.59 = 189,322.89/x
  3. Step 3: Cross multiply
    256,913.52x = 384,871.59 × 189,322.89
  4. Step 4: Simplify right side
    256,913.52x = 72,865,001,697.70
  5. Step 5: Solve for x
    x = 72,865,001,697.70/256,913.52
  6. Step 6: Final answer
    x = 283,616.84

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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.