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Finding the Fourth Proportional to 424,368.21, 585,633.93 and 243,080.04

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Solution

The fourth proportional to 424,368.21, 585,633.93 and 243,080.04 is: 335,453.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,368.21 : 585,633.93 = 243,080.04 : x
  2. Step 2: Convert to fraction form
    424,368.21/585,633.93 = 243,080.04/x
  3. Step 3: Cross multiply
    424,368.21x = 585,633.93 × 243,080.04
  4. Step 4: Simplify right side
    424,368.21x = 142,355,919,129.76
  5. Step 5: Solve for x
    x = 142,355,919,129.76/424,368.21
  6. Step 6: Final answer
    x = 335,453.78

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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.