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Finding the Fourth Proportional to 716,093.58, 988,189.43 and 393,803.68

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Solution

The fourth proportional to 716,093.58, 988,189.43 and 393,803.68 is: 543,438.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,093.58 : 988,189.43 = 393,803.68 : x
  2. Step 2: Convert to fraction form
    716,093.58/988,189.43 = 393,803.68/x
  3. Step 3: Cross multiply
    716,093.58x = 988,189.43 × 393,803.68
  4. Step 4: Simplify right side
    716,093.58x = 389,152,634,071.10
  5. Step 5: Solve for x
    x = 389,152,634,071.10/716,093.58
  6. Step 6: Final answer
    x = 543,438.24

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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.