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Finding the Fourth Proportional to 256,186.01, 384,513.40 and 129,913.42

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Solution

The fourth proportional to 256,186.01, 384,513.40 and 129,913.42 is: 194,988.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,186.01 : 384,513.40 = 129,913.42 : x
  2. Step 2: Convert to fraction form
    256,186.01/384,513.40 = 129,913.42/x
  3. Step 3: Cross multiply
    256,186.01x = 384,513.40 × 129,913.42
  4. Step 4: Simplify right side
    256,186.01x = 49,953,449,543.76
  5. Step 5: Solve for x
    x = 49,953,449,543.76/256,186.01
  6. Step 6: Final answer
    x = 194,988.98

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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.