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Finding the Fourth Proportional to 185,670.21, 256,153.14 and 105,079.26

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Solution

The fourth proportional to 185,670.21, 256,153.14 and 105,079.26 is: 144,968.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,670.21 : 256,153.14 = 105,079.26 : x
  2. Step 2: Convert to fraction form
    185,670.21/256,153.14 = 105,079.26/x
  3. Step 3: Cross multiply
    185,670.21x = 256,153.14 × 105,079.26
  4. Step 4: Simplify right side
    185,670.21x = 26,916,382,397.88
  5. Step 5: Solve for x
    x = 26,916,382,397.88/185,670.21
  6. Step 6: Final answer
    x = 144,968.77

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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.