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Finding the Fourth Proportional to 356,152.40, 534,328.74 and 143,069.92

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Solution

The fourth proportional to 356,152.40, 534,328.74 and 143,069.92 is: 214,645.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,152.40 : 534,328.74 = 143,069.92 : x
  2. Step 2: Convert to fraction form
    356,152.40/534,328.74 = 143,069.92/x
  3. Step 3: Cross multiply
    356,152.40x = 534,328.74 × 143,069.92
  4. Step 4: Simplify right side
    356,152.40x = 76,446,370,085.50
  5. Step 5: Solve for x
    x = 76,446,370,085.50/356,152.40
  6. Step 6: Final answer
    x = 214,645.11

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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.