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Finding the Fourth Proportional to 866,010.40, 1,299,015.60 and 817,021.60

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Solution

The fourth proportional to 866,010.40, 1,299,015.60 and 817,021.60 is: 1,225,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,010.40 : 1,299,015.60 = 817,021.60 : x
  2. Step 2: Convert to fraction form
    866,010.40/1,299,015.60 = 817,021.60/x
  3. Step 3: Cross multiply
    866,010.40x = 1,299,015.60 × 817,021.60
  4. Step 4: Simplify right side
    866,010.40x = 1,061,323,803,936.96
  5. Step 5: Solve for x
    x = 1,061,323,803,936.96/866,010.40
  6. Step 6: Final answer
    x = 1,225,532.40

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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.