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Finding the Fourth Proportional to 472,852.80, 707,551.20 and 348,436.80

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Solution

The fourth proportional to 472,852.80, 707,551.20 and 348,436.80 is: 521,381.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,852.80 : 707,551.20 = 348,436.80 : x
  2. Step 2: Convert to fraction form
    472,852.80/707,551.20 = 348,436.80/x
  3. Step 3: Cross multiply
    472,852.80x = 707,551.20 × 348,436.80
  4. Step 4: Simplify right side
    472,852.80x = 246,536,875,964.16
  5. Step 5: Solve for x
    x = 246,536,875,964.16/472,852.80
  6. Step 6: Final answer
    x = 521,381.87

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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.