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Finding the Fourth Proportional to 67,959, 93,783.42 and 38,151

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Solution

The fourth proportional to 67,959, 93,783.42 and 38,151 is: 52,648.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,959 : 93,783.42 = 38,151 : x
  2. Step 2: Convert to fraction form
    67,959/93,783.42 = 38,151/x
  3. Step 3: Cross multiply
    67,959x = 93,783.42 × 38,151
  4. Step 4: Simplify right side
    67,959x = 3,577,931,256.42
  5. Step 5: Solve for x
    x = 3,577,931,256.42/67,959
  6. Step 6: Final answer
    x = 52,648.38

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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.