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Finding the Fourth Proportional to 633,515.12, 874,265 and 361,577.68

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Solution

The fourth proportional to 633,515.12, 874,265 and 361,577.68 is: 498,985.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,515.12 : 874,265 = 361,577.68 : x
  2. Step 2: Convert to fraction form
    633,515.12/874,265 = 361,577.68/x
  3. Step 3: Cross multiply
    633,515.12x = 874,265 × 361,577.68
  4. Step 4: Simplify right side
    633,515.12x = 316,114,710,405.20
  5. Step 5: Solve for x
    x = 316,114,710,405.20/633,515.12
  6. Step 6: Final answer
    x = 498,985.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.