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Finding the Fourth Proportional to 358,434.65, 537,653.38 and 145,206.59

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Solution

The fourth proportional to 358,434.65, 537,653.38 and 145,206.59 is: 217,810.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,434.65 : 537,653.38 = 145,206.59 : x
  2. Step 2: Convert to fraction form
    358,434.65/537,653.38 = 145,206.59/x
  3. Step 3: Cross multiply
    358,434.65x = 537,653.38 × 145,206.59
  4. Step 4: Simplify right side
    358,434.65x = 78,070,813,185.74
  5. Step 5: Solve for x
    x = 78,070,813,185.74/358,434.65
  6. Step 6: Final answer
    x = 217,810.46

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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.