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Finding the Fourth Proportional to 530,641.81, 732,298.82 and 288,937.61

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Solution

The fourth proportional to 530,641.81, 732,298.82 and 288,937.61 is: 398,741.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,641.81 : 732,298.82 = 288,937.61 : x
  2. Step 2: Convert to fraction form
    530,641.81/732,298.82 = 288,937.61/x
  3. Step 3: Cross multiply
    530,641.81x = 732,298.82 × 288,937.61
  4. Step 4: Simplify right side
    530,641.81x = 211,588,665,750.44
  5. Step 5: Solve for x
    x = 211,588,665,750.44/530,641.81
  6. Step 6: Final answer
    x = 398,741.04

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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.