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Finding the Fourth Proportional to 263,312.70, 394,774.65 and 113,430.30

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Solution

The fourth proportional to 263,312.70, 394,774.65 and 113,430.30 is: 170,061.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,312.70 : 394,774.65 = 113,430.30 : x
  2. Step 2: Convert to fraction form
    263,312.70/394,774.65 = 113,430.30/x
  3. Step 3: Cross multiply
    263,312.70x = 394,774.65 × 113,430.30
  4. Step 4: Simplify right side
    263,312.70x = 44,779,406,981.90
  5. Step 5: Solve for x
    x = 44,779,406,981.90/263,312.70
  6. Step 6: Final answer
    x = 170,061.71

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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.