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Finding the Fourth Proportional to 620,487.80, 930,950.40 and 598,617.80

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Solution

The fourth proportional to 620,487.80, 930,950.40 and 598,617.80 is: 898,137.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,487.80 : 930,950.40 = 598,617.80 : x
  2. Step 2: Convert to fraction form
    620,487.80/930,950.40 = 598,617.80/x
  3. Step 3: Cross multiply
    620,487.80x = 930,950.40 × 598,617.80
  4. Step 4: Simplify right side
    620,487.80x = 557,283,480,357.12
  5. Step 5: Solve for x
    x = 557,283,480,357.12/620,487.80
  6. Step 6: Final answer
    x = 898,137.69

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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.