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Finding the Fourth Proportional to 716,089.66, 988,229.10 and 393,824.68

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Solution

The fourth proportional to 716,089.66, 988,229.10 and 393,824.68 is: 543,492.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,089.66 : 988,229.10 = 393,824.68 : x
  2. Step 2: Convert to fraction form
    716,089.66/988,229.10 = 393,824.68/x
  3. Step 3: Cross multiply
    716,089.66x = 988,229.10 × 393,824.68
  4. Step 4: Simplify right side
    716,089.66x = 389,189,009,074.19
  5. Step 5: Solve for x
    x = 389,189,009,074.19/716,089.66
  6. Step 6: Final answer
    x = 543,492.01

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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.