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Finding the Fourth Proportional to 780,115.60, 1,094,523.80 and 780,115.60

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Solution

The fourth proportional to 780,115.60, 1,094,523.80 and 780,115.60 is: 1,094,523.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,115.60 : 1,094,523.80 = 780,115.60 : x
  2. Step 2: Convert to fraction form
    780,115.60/1,094,523.80 = 780,115.60/x
  3. Step 3: Cross multiply
    780,115.60x = 1,094,523.80 × 780,115.60
  4. Step 4: Simplify right side
    780,115.60x = 853,855,090,951.28
  5. Step 5: Solve for x
    x = 853,855,090,951.28/780,115.60
  6. Step 6: Final answer
    x = 1,094,523.80

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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.