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Finding the Fourth Proportional to 358,639.68, 538,030.32 and 105,924.48

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Solution

The fourth proportional to 358,639.68, 538,030.32 and 105,924.48 is: 158,907.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,639.68 : 538,030.32 = 105,924.48 : x
  2. Step 2: Convert to fraction form
    358,639.68/538,030.32 = 105,924.48/x
  3. Step 3: Cross multiply
    358,639.68x = 538,030.32 × 105,924.48
  4. Step 4: Simplify right side
    358,639.68x = 56,990,581,870.23
  5. Step 5: Solve for x
    x = 56,990,581,870.23/358,639.68
  6. Step 6: Final answer
    x = 158,907.63

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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.