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Finding the Fourth Proportional to 235,779.80, 353,669.70 and 189,123.80

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Solution

The fourth proportional to 235,779.80, 353,669.70 and 189,123.80 is: 283,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,779.80 : 353,669.70 = 189,123.80 : x
  2. Step 2: Convert to fraction form
    235,779.80/353,669.70 = 189,123.80/x
  3. Step 3: Cross multiply
    235,779.80x = 353,669.70 × 189,123.80
  4. Step 4: Simplify right side
    235,779.80x = 66,887,357,608.86
  5. Step 5: Solve for x
    x = 66,887,357,608.86/235,779.80
  6. Step 6: Final answer
    x = 283,685.70

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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.