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Finding the Fourth Proportional to 469,489.96, 703,032.90 and 258,894.28

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Solution

The fourth proportional to 469,489.96, 703,032.90 and 258,894.28 is: 387,678.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,489.96 : 703,032.90 = 258,894.28 : x
  2. Step 2: Convert to fraction form
    469,489.96/703,032.90 = 258,894.28/x
  3. Step 3: Cross multiply
    469,489.96x = 703,032.90 × 258,894.28
  4. Step 4: Simplify right side
    469,489.96x = 182,011,196,461.81
  5. Step 5: Solve for x
    x = 182,011,196,461.81/469,489.96
  6. Step 6: Final answer
    x = 387,678.57

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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.