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Finding the Fourth Proportional to 181,886.29, 251,009.35 and 105,405.55

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Solution

The fourth proportional to 181,886.29, 251,009.35 and 105,405.55 is: 145,463.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,886.29 : 251,009.35 = 105,405.55 : x
  2. Step 2: Convert to fraction form
    181,886.29/251,009.35 = 105,405.55/x
  3. Step 3: Cross multiply
    181,886.29x = 251,009.35 × 105,405.55
  4. Step 4: Simplify right side
    181,886.29x = 26,457,777,700.86
  5. Step 5: Solve for x
    x = 26,457,777,700.86/181,886.29
  6. Step 6: Final answer
    x = 145,463.29

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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.