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Finding the Fourth Proportional to 545,885.64, 753,338.03 and 316,443.87

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Solution

The fourth proportional to 545,885.64, 753,338.03 and 316,443.87 is: 436,701.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,885.64 : 753,338.03 = 316,443.87 : x
  2. Step 2: Convert to fraction form
    545,885.64/753,338.03 = 316,443.87/x
  3. Step 3: Cross multiply
    545,885.64x = 753,338.03 × 316,443.87
  4. Step 4: Simplify right side
    545,885.64x = 238,389,200,049.16
  5. Step 5: Solve for x
    x = 238,389,200,049.16/545,885.64
  6. Step 6: Final answer
    x = 436,701.72

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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.