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Finding the Fourth Proportional to 620,512.80, 930,987.90 and 598,642.80

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Solution

The fourth proportional to 620,512.80, 930,987.90 and 598,642.80 is: 898,175.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,512.80 : 930,987.90 = 598,642.80 : x
  2. Step 2: Convert to fraction form
    620,512.80/930,987.90 = 598,642.80/x
  3. Step 3: Cross multiply
    620,512.80x = 930,987.90 × 598,642.80
  4. Step 4: Simplify right side
    620,512.80x = 557,329,203,222.12
  5. Step 5: Solve for x
    x = 557,329,203,222.12/620,512.80
  6. Step 6: Final answer
    x = 898,175.19

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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.