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Finding the Fourth Proportional to 620,603.65, 930,905.51 and 199,879.53

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Solution

The fourth proportional to 620,603.65, 930,905.51 and 199,879.53 is: 299,819.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,603.65 : 930,905.51 = 199,879.53 : x
  2. Step 2: Convert to fraction form
    620,603.65/930,905.51 = 199,879.53/x
  3. Step 3: Cross multiply
    620,603.65x = 930,905.51 × 199,879.53
  4. Step 4: Simplify right side
    620,603.65x = 186,068,955,813.21
  5. Step 5: Solve for x
    x = 186,068,955,813.21/620,603.65
  6. Step 6: Final answer
    x = 299,819.31

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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.