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Finding the Fourth Proportional to 864,194.40, 1,207,072.80 and 864,194.40

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Solution

The fourth proportional to 864,194.40, 1,207,072.80 and 864,194.40 is: 1,207,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,194.40 : 1,207,072.80 = 864,194.40 : x
  2. Step 2: Convert to fraction form
    864,194.40/1,207,072.80 = 864,194.40/x
  3. Step 3: Cross multiply
    864,194.40x = 1,207,072.80 × 864,194.40
  4. Step 4: Simplify right side
    864,194.40x = 1,043,145,554,152.32
  5. Step 5: Solve for x
    x = 1,043,145,554,152.32/864,194.40
  6. Step 6: Final answer
    x = 1,207,072.80

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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.