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Finding the Fourth Proportional to 319,289.39, 440,683.16 and 183,416.54

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Solution

The fourth proportional to 319,289.39, 440,683.16 and 183,416.54 is: 253,151.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,289.39 : 440,683.16 = 183,416.54 : x
  2. Step 2: Convert to fraction form
    319,289.39/440,683.16 = 183,416.54/x
  3. Step 3: Cross multiply
    319,289.39x = 440,683.16 × 183,416.54
  4. Step 4: Simplify right side
    319,289.39x = 80,828,580,628.09
  5. Step 5: Solve for x
    x = 80,828,580,628.09/319,289.39
  6. Step 6: Final answer
    x = 253,151.48

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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.