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Finding the Fourth Proportional to 647,637.19, 971,537.17 and 347,705.51

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Solution

The fourth proportional to 647,637.19, 971,537.17 and 347,705.51 is: 521,601.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,637.19 : 971,537.17 = 347,705.51 : x
  2. Step 2: Convert to fraction form
    647,637.19/971,537.17 = 347,705.51/x
  3. Step 3: Cross multiply
    647,637.19x = 971,537.17 × 347,705.51
  4. Step 4: Simplify right side
    647,637.19x = 337,808,827,178.81
  5. Step 5: Solve for x
    x = 337,808,827,178.81/647,637.19
  6. Step 6: Final answer
    x = 521,601.96

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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.