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Finding the Fourth Proportional to 620,954.10, 931,431.15 and 620,954.10

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Solution

The fourth proportional to 620,954.10, 931,431.15 and 620,954.10 is: 931,431.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,954.10 : 931,431.15 = 620,954.10 : x
  2. Step 2: Convert to fraction form
    620,954.10/931,431.15 = 620,954.10/x
  3. Step 3: Cross multiply
    620,954.10x = 931,431.15 × 620,954.10
  4. Step 4: Simplify right side
    620,954.10x = 578,375,991,460.22
  5. Step 5: Solve for x
    x = 578,375,991,460.22/620,954.10
  6. Step 6: Final answer
    x = 931,431.15

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Similar ratio
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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.