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Finding the Fourth Proportional to 530,689.81, 732,360.67 and 288,977.10

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Solution

The fourth proportional to 530,689.81, 732,360.67 and 288,977.10 is: 398,793.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,689.81 : 732,360.67 = 288,977.10 : x
  2. Step 2: Convert to fraction form
    530,689.81/732,360.67 = 288,977.10/x
  3. Step 3: Cross multiply
    530,689.81x = 732,360.67 × 288,977.10
  4. Step 4: Simplify right side
    530,689.81x = 211,635,462,570.66
  5. Step 5: Solve for x
    x = 211,635,462,570.66/530,689.81
  6. Step 6: Final answer
    x = 398,793.15

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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.