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Finding the Fourth Proportional to 468,117.70, 702,176.55 and 389,385.70

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Solution

The fourth proportional to 468,117.70, 702,176.55 and 389,385.70 is: 584,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,117.70 : 702,176.55 = 389,385.70 : x
  2. Step 2: Convert to fraction form
    468,117.70/702,176.55 = 389,385.70/x
  3. Step 3: Cross multiply
    468,117.70x = 702,176.55 × 389,385.70
  4. Step 4: Simplify right side
    468,117.70x = 273,417,507,445.34
  5. Step 5: Solve for x
    x = 273,417,507,445.34/468,117.70
  6. Step 6: Final answer
    x = 584,078.55

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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.