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Finding the Fourth Proportional to 253,036.93, 348,964.80 and 209,948.20

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Solution

The fourth proportional to 253,036.93, 348,964.80 and 209,948.20 is: 289,540.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,036.93 : 348,964.80 = 209,948.20 : x
  2. Step 2: Convert to fraction form
    253,036.93/348,964.80 = 209,948.20/x
  3. Step 3: Cross multiply
    253,036.93x = 348,964.80 × 209,948.20
  4. Step 4: Simplify right side
    253,036.93x = 73,264,531,623.36
  5. Step 5: Solve for x
    x = 73,264,531,623.36/253,036.93
  6. Step 6: Final answer
    x = 289,540.87

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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.