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Finding the Fourth Proportional to 382,031.40, 572,901.30 and 115,703.40

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Solution

The fourth proportional to 382,031.40, 572,901.30 and 115,703.40 is: 173,510.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,031.40 : 572,901.30 = 115,703.40 : x
  2. Step 2: Convert to fraction form
    382,031.40/572,901.30 = 115,703.40/x
  3. Step 3: Cross multiply
    382,031.40x = 572,901.30 × 115,703.40
  4. Step 4: Simplify right side
    382,031.40x = 66,286,628,274.42
  5. Step 5: Solve for x
    x = 66,286,628,274.42/382,031.40
  6. Step 6: Final answer
    x = 173,510.94

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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.