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Finding the Fourth Proportional to 61,015.34, 84,157.76 and 55,995.76

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Solution

The fourth proportional to 61,015.34, 84,157.76 and 55,995.76 is: 77,234.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,015.34 : 84,157.76 = 55,995.76 : x
  2. Step 2: Convert to fraction form
    61,015.34/84,157.76 = 55,995.76/x
  3. Step 3: Cross multiply
    61,015.34x = 84,157.76 × 55,995.76
  4. Step 4: Simplify right side
    61,015.34x = 4,712,477,731.10
  5. Step 5: Solve for x
    x = 4,712,477,731.10/61,015.34
  6. Step 6: Final answer
    x = 77,234.31

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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.