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Finding the Fourth Proportional to 659,964.51, 989,950.41 and 239,229.45

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Solution

The fourth proportional to 659,964.51, 989,950.41 and 239,229.45 is: 358,845.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,964.51 : 989,950.41 = 239,229.45 : x
  2. Step 2: Convert to fraction form
    659,964.51/989,950.41 = 239,229.45/x
  3. Step 3: Cross multiply
    659,964.51x = 989,950.41 × 239,229.45
  4. Step 4: Simplify right side
    659,964.51x = 236,825,292,111.58
  5. Step 5: Solve for x
    x = 236,825,292,111.58/659,964.51
  6. Step 6: Final answer
    x = 358,845.50

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Half scale
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Double scale
Find fourth proportional to 659,965.51, 989,951.91 and 239,230.45
Similar ratio
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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.