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Finding the Fourth Proportional to 1,170,216.20, 1,643,026.60 and 1,170,216.20

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Solution

The fourth proportional to 1,170,216.20, 1,643,026.60 and 1,170,216.20 is: 1,643,026.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170,216.20 : 1,643,026.60 = 1,170,216.20 : x
  2. Step 2: Convert to fraction form
    1,170,216.20/1,643,026.60 = 1,170,216.20/x
  3. Step 3: Cross multiply
    1,170,216.20x = 1,643,026.60 × 1,170,216.20
  4. Step 4: Simplify right side
    1,170,216.20x = 1,922,696,344,350.92
  5. Step 5: Solve for x
    x = 1,922,696,344,350.92/1,170,216.20
  6. Step 6: Final answer
    x = 1,643,026.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.