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Finding the Fourth Proportional to 5,220,866.40, 7,831,299.60 and 4,866,572.40

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Solution

The fourth proportional to 5,220,866.40, 7,831,299.60 and 4,866,572.40 is: 7,299,858.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220,866.40 : 7,831,299.60 = 4,866,572.40 : x
  2. Step 2: Convert to fraction form
    5,220,866.40/7,831,299.60 = 4,866,572.40/x
  3. Step 3: Cross multiply
    5,220,866.40x = 7,831,299.60 × 4,866,572.40
  4. Step 4: Simplify right side
    5,220,866.40x = 38,111,586,489,491.04
  5. Step 5: Solve for x
    x = 38,111,586,489,491.04/5,220,866.40
  6. Step 6: Final answer
    x = 7,299,858.60

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Double scale
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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.