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Finding the Fourth Proportional to 418,393.17, 577,386.09 and 227,406.51

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Solution

The fourth proportional to 418,393.17, 577,386.09 and 227,406.51 is: 313,822.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,393.17 : 577,386.09 = 227,406.51 : x
  2. Step 2: Convert to fraction form
    418,393.17/577,386.09 = 227,406.51/x
  3. Step 3: Cross multiply
    418,393.17x = 577,386.09 × 227,406.51
  4. Step 4: Simplify right side
    418,393.17x = 131,301,355,649.45
  5. Step 5: Solve for x
    x = 131,301,355,649.45/418,393.17
  6. Step 6: Final answer
    x = 313,822.89

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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.