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Finding the Fourth Proportional to 368,378.51, 508,357.28 and 207,233.51

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Solution

The fourth proportional to 368,378.51, 508,357.28 and 207,233.51 is: 285,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,378.51 : 508,357.28 = 207,233.51 : x
  2. Step 2: Convert to fraction form
    368,378.51/508,357.28 = 207,233.51/x
  3. Step 3: Cross multiply
    368,378.51x = 508,357.28 × 207,233.51
  4. Step 4: Simplify right side
    368,378.51x = 105,348,662,432.29
  5. Step 5: Solve for x
    x = 105,348,662,432.29/368,378.51
  6. Step 6: Final answer
    x = 285,979.39

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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.