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Finding the Fourth Proportional to 343,378.39, 473,889.54 and 190,431.76

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Solution

The fourth proportional to 343,378.39, 473,889.54 and 190,431.76 is: 262,811.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,378.39 : 473,889.54 = 190,431.76 : x
  2. Step 2: Convert to fraction form
    343,378.39/473,889.54 = 190,431.76/x
  3. Step 3: Cross multiply
    343,378.39x = 473,889.54 × 190,431.76
  4. Step 4: Simplify right side
    343,378.39x = 90,243,619,147.79
  5. Step 5: Solve for x
    x = 90,243,619,147.79/343,378.39
  6. Step 6: Final answer
    x = 262,811.00

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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.