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Finding the Fourth Proportional to 474,865.76, 655,314.60 and 260,005.76

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Solution

The fourth proportional to 474,865.76, 655,314.60 and 260,005.76 is: 358,807.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,865.76 : 655,314.60 = 260,005.76 : x
  2. Step 2: Convert to fraction form
    474,865.76/655,314.60 = 260,005.76/x
  3. Step 3: Cross multiply
    474,865.76x = 655,314.60 × 260,005.76
  4. Step 4: Simplify right side
    474,865.76x = 170,385,570,612.10
  5. Step 5: Solve for x
    x = 170,385,570,612.10/474,865.76
  6. Step 6: Final answer
    x = 358,807.87

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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.