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Finding the Fourth Proportional to 866,263.88, 1,299,617.28 and 360,656.80

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Solution

The fourth proportional to 866,263.88, 1,299,617.28 and 360,656.80 is: 541,077.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,263.88 : 1,299,617.28 = 360,656.80 : x
  2. Step 2: Convert to fraction form
    866,263.88/1,299,617.28 = 360,656.80/x
  3. Step 3: Cross multiply
    866,263.88x = 1,299,617.28 × 360,656.80
  4. Step 4: Simplify right side
    866,263.88x = 468,715,809,429.50
  5. Step 5: Solve for x
    x = 468,715,809,429.50/866,263.88
  6. Step 6: Final answer
    x = 541,077.40

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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.