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Finding the Fourth Proportional to 293,656.16, 405,175.80 and 172,802.72

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Solution

The fourth proportional to 293,656.16, 405,175.80 and 172,802.72 is: 238,426.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,656.16 : 405,175.80 = 172,802.72 : x
  2. Step 2: Convert to fraction form
    293,656.16/405,175.80 = 172,802.72/x
  3. Step 3: Cross multiply
    293,656.16x = 405,175.80 × 172,802.72
  4. Step 4: Simplify right side
    293,656.16x = 70,015,480,318.18
  5. Step 5: Solve for x
    x = 70,015,480,318.18/293,656.16
  6. Step 6: Final answer
    x = 238,426.74

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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.