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Finding the Fourth Proportional to 788,425.60, 1,106,595.20 and 788,425.60

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Solution

The fourth proportional to 788,425.60, 1,106,595.20 and 788,425.60 is: 1,106,595.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,425.60 : 1,106,595.20 = 788,425.60 : x
  2. Step 2: Convert to fraction form
    788,425.60/1,106,595.20 = 788,425.60/x
  3. Step 3: Cross multiply
    788,425.60x = 1,106,595.20 × 788,425.60
  4. Step 4: Simplify right side
    788,425.60x = 872,467,984,517.12
  5. Step 5: Solve for x
    x = 872,467,984,517.12/788,425.60
  6. Step 6: Final answer
    x = 1,106,595.20

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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.