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Finding the Fourth Proportional to 185,670.72, 256,153.82 and 105,079.76

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Solution

The fourth proportional to 185,670.72, 256,153.82 and 105,079.76 is: 144,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,670.72 : 256,153.82 = 105,079.76 : x
  2. Step 2: Convert to fraction form
    185,670.72/256,153.82 = 105,079.76/x
  3. Step 3: Cross multiply
    185,670.72x = 256,153.82 × 105,079.76
  4. Step 4: Simplify right side
    185,670.72x = 26,916,581,928.68
  5. Step 5: Solve for x
    x = 26,916,581,928.68/185,670.72
  6. Step 6: Final answer
    x = 144,969.45

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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.