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Finding the Fourth Proportional to 356,307.89, 491,705.10 and 195,165.63

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Solution

The fourth proportional to 356,307.89, 491,705.10 and 195,165.63 is: 269,328.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,307.89 : 491,705.10 = 195,165.63 : x
  2. Step 2: Convert to fraction form
    356,307.89/491,705.10 = 195,165.63/x
  3. Step 3: Cross multiply
    356,307.89x = 491,705.10 × 195,165.63
  4. Step 4: Simplify right side
    356,307.89x = 95,963,935,615.71
  5. Step 5: Solve for x
    x = 95,963,935,615.71/356,307.89
  6. Step 6: Final answer
    x = 269,328.69

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Double scale
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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.