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Finding the Fourth Proportional to 352,159.40, 526,856.70 and 318,981.80

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Solution

The fourth proportional to 352,159.40, 526,856.70 and 318,981.80 is: 477,220.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,159.40 : 526,856.70 = 318,981.80 : x
  2. Step 2: Convert to fraction form
    352,159.40/526,856.70 = 318,981.80/x
  3. Step 3: Cross multiply
    352,159.40x = 526,856.70 × 318,981.80
  4. Step 4: Simplify right side
    352,159.40x = 168,057,698,508.06
  5. Step 5: Solve for x
    x = 168,057,698,508.06/352,159.40
  6. Step 6: Final answer
    x = 477,220.54

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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.