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Finding the Fourth Proportional to 219,779.70, 329,669.55 and 190,911.30

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Solution

The fourth proportional to 219,779.70, 329,669.55 and 190,911.30 is: 286,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,779.70 : 329,669.55 = 190,911.30 : x
  2. Step 2: Convert to fraction form
    219,779.70/329,669.55 = 190,911.30/x
  3. Step 3: Cross multiply
    219,779.70x = 329,669.55 × 190,911.30
  4. Step 4: Simplify right side
    219,779.70x = 62,937,642,360.92
  5. Step 5: Solve for x
    x = 62,937,642,360.92/219,779.70
  6. Step 6: Final answer
    x = 286,366.95

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1.5x scale

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.