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Finding the Fourth Proportional to 265,778,840.60, 398,668,260.90 and 265,778,840.60

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Solution

The fourth proportional to 265,778,840.60, 398,668,260.90 and 265,778,840.60 is: 398,668,260.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,778,840.60 : 398,668,260.90 = 265,778,840.60 : x
  2. Step 2: Convert to fraction form
    265,778,840.60/398,668,260.90 = 265,778,840.60/x
  3. Step 3: Cross multiply
    265,778,840.60x = 398,668,260.90 × 265,778,840.60
  4. Step 4: Simplify right side
    265,778,840.60x = 105,957,588,166,020,304
  5. Step 5: Solve for x
    x = 105,957,588,166,020,304/265,778,840.60
  6. Step 6: Final answer
    x = 398,668,260.90

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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.