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Finding the Fourth Proportional to 545,682.61, 753,050.01 and 316,256.86

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Solution

The fourth proportional to 545,682.61, 753,050.01 and 316,256.86 is: 436,439.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,682.61 : 753,050.01 = 316,256.86 : x
  2. Step 2: Convert to fraction form
    545,682.61/753,050.01 = 316,256.86/x
  3. Step 3: Cross multiply
    545,682.61x = 753,050.01 × 316,256.86
  4. Step 4: Simplify right side
    545,682.61x = 238,157,231,585.57
  5. Step 5: Solve for x
    x = 238,157,231,585.57/545,682.61
  6. Step 6: Final answer
    x = 436,439.11

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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.