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Finding the Fourth Proportional to 476,624.32, 714,936.07 and 121,638.31

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Solution

The fourth proportional to 476,624.32, 714,936.07 and 121,638.31 is: 182,457.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,624.32 : 714,936.07 = 121,638.31 : x
  2. Step 2: Convert to fraction form
    476,624.32/714,936.07 = 121,638.31/x
  3. Step 3: Cross multiply
    476,624.32x = 714,936.07 × 121,638.31
  4. Step 4: Simplify right side
    476,624.32x = 86,963,615,312.84
  5. Step 5: Solve for x
    x = 86,963,615,312.84/476,624.32
  6. Step 6: Final answer
    x = 182,457.36

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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.