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Finding the Fourth Proportional to 387,655.86, 581,709.39 and 163,000.02

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Solution

The fourth proportional to 387,655.86, 581,709.39 and 163,000.02 is: 244,594.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,655.86 : 581,709.39 = 163,000.02 : x
  2. Step 2: Convert to fraction form
    387,655.86/581,709.39 = 163,000.02/x
  3. Step 3: Cross multiply
    387,655.86x = 581,709.39 × 163,000.02
  4. Step 4: Simplify right side
    387,655.86x = 94,818,642,204.19
  5. Step 5: Solve for x
    x = 94,818,642,204.19/387,655.86
  6. Step 6: Final answer
    x = 244,594.89

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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.