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Finding the Fourth Proportional to 514,264.18, 770,686.86 and 387,765.40

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Solution

The fourth proportional to 514,264.18, 770,686.86 and 387,765.40 is: 581,113.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,264.18 : 770,686.86 = 387,765.40 : x
  2. Step 2: Convert to fraction form
    514,264.18/770,686.86 = 387,765.40/x
  3. Step 3: Cross multiply
    514,264.18x = 770,686.86 × 387,765.40
  4. Step 4: Simplify right side
    514,264.18x = 298,845,698,542.64
  5. Step 5: Solve for x
    x = 298,845,698,542.64/514,264.18
  6. Step 6: Final answer
    x = 581,113.19

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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.