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Finding the Fourth Proportional to 620,638.60, 931,119.90 and 199,924.60

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Solution

The fourth proportional to 620,638.60, 931,119.90 and 199,924.60 is: 299,939.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,638.60 : 931,119.90 = 199,924.60 : x
  2. Step 2: Convert to fraction form
    620,638.60/931,119.90 = 199,924.60/x
  3. Step 3: Cross multiply
    620,638.60x = 931,119.90 × 199,924.60
  4. Step 4: Simplify right side
    620,638.60x = 186,153,773,559.54
  5. Step 5: Solve for x
    x = 186,153,773,559.54/620,638.60
  6. Step 6: Final answer
    x = 299,939.08

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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.