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Finding the Fourth Proportional to 35,438.72, 53,172.72 and 17,913.68

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Solution

The fourth proportional to 35,438.72, 53,172.72 and 17,913.68 is: 26,877.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,438.72 : 53,172.72 = 17,913.68 : x
  2. Step 2: Convert to fraction form
    35,438.72/53,172.72 = 17,913.68/x
  3. Step 3: Cross multiply
    35,438.72x = 53,172.72 × 17,913.68
  4. Step 4: Simplify right side
    35,438.72x = 952,519,090.81
  5. Step 5: Solve for x
    x = 952,519,090.81/35,438.72
  6. Step 6: Final answer
    x = 26,877.92

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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.