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Finding the Fourth Proportional to 358,361.75, 537,530.70 and 105,646.43

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Solution

The fourth proportional to 358,361.75, 537,530.70 and 105,646.43 is: 158,466.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,361.75 : 537,530.70 = 105,646.43 : x
  2. Step 2: Convert to fraction form
    358,361.75/537,530.70 = 105,646.43/x
  3. Step 3: Cross multiply
    358,361.75x = 537,530.70 × 105,646.43
  4. Step 4: Simplify right side
    358,361.75x = 56,788,199,470.40
  5. Step 5: Solve for x
    x = 56,788,199,470.40/358,361.75
  6. Step 6: Final answer
    x = 158,466.13

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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.