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Finding the Fourth Proportional to 472,191.15, 651,604.80 and 257,326.56

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Solution

The fourth proportional to 472,191.15, 651,604.80 and 257,326.56 is: 355,100.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,191.15 : 651,604.80 = 257,326.56 : x
  2. Step 2: Convert to fraction form
    472,191.15/651,604.80 = 257,326.56/x
  3. Step 3: Cross multiply
    472,191.15x = 651,604.80 × 257,326.56
  4. Step 4: Simplify right side
    472,191.15x = 167,675,221,663.49
  5. Step 5: Solve for x
    x = 167,675,221,663.49/472,191.15
  6. Step 6: Final answer
    x = 355,100.31

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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.