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Finding the Fourth Proportional to 891,659.36, 1,230,576.36 and 509,613.32

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Solution

The fourth proportional to 891,659.36, 1,230,576.36 and 509,613.32 is: 703,315.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,659.36 : 1,230,576.36 = 509,613.32 : x
  2. Step 2: Convert to fraction form
    891,659.36/1,230,576.36 = 509,613.32/x
  3. Step 3: Cross multiply
    891,659.36x = 1,230,576.36 × 509,613.32
  4. Step 4: Simplify right side
    891,659.36x = 627,118,104,333.12
  5. Step 5: Solve for x
    x = 627,118,104,333.12/891,659.36
  6. Step 6: Final answer
    x = 703,315.79

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.