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Finding the Fourth Proportional to 128,307.01, 177,056.51 and 70,943.02

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Solution

The fourth proportional to 128,307.01, 177,056.51 and 70,943.02 is: 97,897.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,307.01 : 177,056.51 = 70,943.02 : x
  2. Step 2: Convert to fraction form
    128,307.01/177,056.51 = 70,943.02/x
  3. Step 3: Cross multiply
    128,307.01x = 177,056.51 × 70,943.02
  4. Step 4: Simplify right side
    128,307.01x = 12,560,923,530.06
  5. Step 5: Solve for x
    x = 12,560,923,530.06/128,307.01
  6. Step 6: Final answer
    x = 97,897.41

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.