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Finding the Fourth Proportional to 620,569.42, 930,907.56 and 171,290.36

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Solution

The fourth proportional to 620,569.42, 930,907.56 and 171,290.36 is: 256,950.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,569.42 : 930,907.56 = 171,290.36 : x
  2. Step 2: Convert to fraction form
    620,569.42/930,907.56 = 171,290.36/x
  3. Step 3: Cross multiply
    620,569.42x = 930,907.56 × 171,290.36
  4. Step 4: Simplify right side
    620,569.42x = 159,455,491,079.12
  5. Step 5: Solve for x
    x = 159,455,491,079.12/620,569.42
  6. Step 6: Final answer
    x = 256,950.29

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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.