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Finding the Fourth Proportional to 185,521.86, 256,013.10 and 100,637.10

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Solution

The fourth proportional to 185,521.86, 256,013.10 and 100,637.10 is: 138,875.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,521.86 : 256,013.10 = 100,637.10 : x
  2. Step 2: Convert to fraction form
    185,521.86/256,013.10 = 100,637.10/x
  3. Step 3: Cross multiply
    185,521.86x = 256,013.10 × 100,637.10
  4. Step 4: Simplify right side
    185,521.86x = 25,764,415,946.01
  5. Step 5: Solve for x
    x = 25,764,415,946.01/185,521.86
  6. Step 6: Final answer
    x = 138,875.36

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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.