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Finding the Fourth Proportional to 326,185.50, 450,136.80 and 190,312.86

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Solution

The fourth proportional to 326,185.50, 450,136.80 and 190,312.86 is: 262,632.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,185.50 : 450,136.80 = 190,312.86 : x
  2. Step 2: Convert to fraction form
    326,185.50/450,136.80 = 190,312.86/x
  3. Step 3: Cross multiply
    326,185.50x = 450,136.80 × 190,312.86
  4. Step 4: Simplify right side
    326,185.50x = 85,666,821,799.25
  5. Step 5: Solve for x
    x = 85,666,821,799.25/326,185.50
  6. Step 6: Final answer
    x = 262,632.22

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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.