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Finding the Fourth Proportional to 418,457.75, 577,459.53 and 237,186.36

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Solution

The fourth proportional to 418,457.75, 577,459.53 and 237,186.36 is: 327,310.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,457.75 : 577,459.53 = 237,186.36 : x
  2. Step 2: Convert to fraction form
    418,457.75/577,459.53 = 237,186.36/x
  3. Step 3: Cross multiply
    418,457.75x = 577,459.53 × 237,186.36
  4. Step 4: Simplify right side
    418,457.75x = 136,965,523,968.01
  5. Step 5: Solve for x
    x = 136,965,523,968.01/418,457.75
  6. Step 6: Final answer
    x = 327,310.29

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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.