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Finding the Fourth Proportional to 319,154.58, 440,309.76 and 183,139.38

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Solution

The fourth proportional to 319,154.58, 440,309.76 and 183,139.38 is: 252,661.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,154.58 : 440,309.76 = 183,139.38 : x
  2. Step 2: Convert to fraction form
    319,154.58/440,309.76 = 183,139.38/x
  3. Step 3: Cross multiply
    319,154.58x = 440,309.76 × 183,139.38
  4. Step 4: Simplify right side
    319,154.58x = 80,638,056,454.35
  5. Step 5: Solve for x
    x = 80,638,056,454.35/319,154.58
  6. Step 6: Final answer
    x = 252,661.44

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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.