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Finding the Fourth Proportional to 622,987.44, 860,096.16 and 408,501.60

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Solution

The fourth proportional to 622,987.44, 860,096.16 and 408,501.60 is: 563,977.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,987.44 : 860,096.16 = 408,501.60 : x
  2. Step 2: Convert to fraction form
    622,987.44/860,096.16 = 408,501.60/x
  3. Step 3: Cross multiply
    622,987.44x = 860,096.16 × 408,501.60
  4. Step 4: Simplify right side
    622,987.44x = 351,350,657,513.86
  5. Step 5: Solve for x
    x = 351,350,657,513.86/622,987.44
  6. Step 6: Final answer
    x = 563,977.11

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1.5x scale

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.