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Finding the Fourth Proportional to 307,987.60, 461,635.80 and 174,931.60

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Solution

The fourth proportional to 307,987.60, 461,635.80 and 174,931.60 is: 262,201.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,987.60 : 461,635.80 = 174,931.60 : x
  2. Step 2: Convert to fraction form
    307,987.60/461,635.80 = 174,931.60/x
  3. Step 3: Cross multiply
    307,987.60x = 461,635.80 × 174,931.60
  4. Step 4: Simplify right side
    307,987.60x = 80,754,689,111.28
  5. Step 5: Solve for x
    x = 80,754,689,111.28/307,987.60
  6. Step 6: Final answer
    x = 262,201.11

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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.