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Finding the Fourth Proportional to 70,959.93, 97,922.16 and 39,128.55

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Solution

The fourth proportional to 70,959.93, 97,922.16 and 39,128.55 is: 53,996.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,959.93 : 97,922.16 = 39,128.55 : x
  2. Step 2: Convert to fraction form
    70,959.93/97,922.16 = 39,128.55/x
  3. Step 3: Cross multiply
    70,959.93x = 97,922.16 × 39,128.55
  4. Step 4: Simplify right side
    70,959.93x = 3,831,552,133.67
  5. Step 5: Solve for x
    x = 3,831,552,133.67/70,959.93
  6. Step 6: Final answer
    x = 53,996.00

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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.