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Finding the Fourth Proportional to 358,950.40, 538,382.40 and 148,566.40

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Solution

The fourth proportional to 358,950.40, 538,382.40 and 148,566.40 is: 222,831.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,950.40 : 538,382.40 = 148,566.40 : x
  2. Step 2: Convert to fraction form
    358,950.40/538,382.40 = 148,566.40/x
  3. Step 3: Cross multiply
    358,950.40x = 538,382.40 × 148,566.40
  4. Step 4: Simplify right side
    358,950.40x = 79,985,534,991.36
  5. Step 5: Solve for x
    x = 79,985,534,991.36/358,950.40
  6. Step 6: Final answer
    x = 222,831.72

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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.