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Finding the Fourth Proportional to 788,493.60, 1,106,690.40 and 788,493.60

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Solution

The fourth proportional to 788,493.60, 1,106,690.40 and 788,493.60 is: 1,106,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,493.60 : 1,106,690.40 = 788,493.60 : x
  2. Step 2: Convert to fraction form
    788,493.60/1,106,690.40 = 788,493.60/x
  3. Step 3: Cross multiply
    788,493.60x = 1,106,690.40 × 788,493.60
  4. Step 4: Simplify right side
    788,493.60x = 872,618,297,581.44
  5. Step 5: Solve for x
    x = 872,618,297,581.44/788,493.60
  6. Step 6: Final answer
    x = 1,106,690.40

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Double scale
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1.5x scale

Why These Related Problems?

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