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Finding the Fourth Proportional to 326,111.40, 489,167.10 and 236,881.80

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Solution

The fourth proportional to 326,111.40, 489,167.10 and 236,881.80 is: 355,322.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,111.40 : 489,167.10 = 236,881.80 : x
  2. Step 2: Convert to fraction form
    326,111.40/489,167.10 = 236,881.80/x
  3. Step 3: Cross multiply
    326,111.40x = 489,167.10 × 236,881.80
  4. Step 4: Simplify right side
    326,111.40x = 115,874,783,148.78
  5. Step 5: Solve for x
    x = 115,874,783,148.78/326,111.40
  6. Step 6: Final answer
    x = 355,322.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.