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Finding the Fourth Proportional to 556,808.30, 835,212.45 and 415,090.70

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Solution

The fourth proportional to 556,808.30, 835,212.45 and 415,090.70 is: 622,636.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,808.30 : 835,212.45 = 415,090.70 : x
  2. Step 2: Convert to fraction form
    556,808.30/835,212.45 = 415,090.70/x
  3. Step 3: Cross multiply
    556,808.30x = 835,212.45 × 415,090.70
  4. Step 4: Simplify right side
    556,808.30x = 346,688,920,519.22
  5. Step 5: Solve for x
    x = 346,688,920,519.22/556,808.30
  6. Step 6: Final answer
    x = 622,636.05

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.