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Finding the Fourth Proportional to 891,687.68, 1,336,501.48 and 410,910.20

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Solution

The fourth proportional to 891,687.68, 1,336,501.48 and 410,910.20 is: 615,890.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,687.68 : 1,336,501.48 = 410,910.20 : x
  2. Step 2: Convert to fraction form
    891,687.68/1,336,501.48 = 410,910.20/x
  3. Step 3: Cross multiply
    891,687.68x = 1,336,501.48 × 410,910.20
  4. Step 4: Simplify right side
    891,687.68x = 549,182,090,447.10
  5. Step 5: Solve for x
    x = 549,182,090,447.10/891,687.68
  6. Step 6: Final answer
    x = 615,890.63

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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.