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Finding the Fourth Proportional to 475,840.60, 656,678.43 and 260,989.72

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Solution

The fourth proportional to 475,840.60, 656,678.43 and 260,989.72 is: 360,175.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,840.60 : 656,678.43 = 260,989.72 : x
  2. Step 2: Convert to fraction form
    475,840.60/656,678.43 = 260,989.72/x
  3. Step 3: Cross multiply
    475,840.60x = 656,678.43 × 260,989.72
  4. Step 4: Simplify right side
    475,840.60x = 171,386,319,575.74
  5. Step 5: Solve for x
    x = 171,386,319,575.74/475,840.60
  6. Step 6: Final answer
    x = 360,175.91

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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.