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Finding the Fourth Proportional to 836,011.70, 1,254,017.55 and 831,346.10

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Solution

The fourth proportional to 836,011.70, 1,254,017.55 and 831,346.10 is: 1,247,019.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,011.70 : 1,254,017.55 = 831,346.10 : x
  2. Step 2: Convert to fraction form
    836,011.70/1,254,017.55 = 831,346.10/x
  3. Step 3: Cross multiply
    836,011.70x = 1,254,017.55 × 831,346.10
  4. Step 4: Simplify right side
    836,011.70x = 1,042,522,599,524.06
  5. Step 5: Solve for x
    x = 1,042,522,599,524.06/836,011.70
  6. Step 6: Final answer
    x = 1,247,019.15

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Double scale
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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.