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Finding the Fourth Proportional to 128,897.79, 193,300.54 and 44,635.32

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Solution

The fourth proportional to 128,897.79, 193,300.54 and 44,635.32 is: 66,937.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897.79 : 193,300.54 = 44,635.32 : x
  2. Step 2: Convert to fraction form
    128,897.79/193,300.54 = 44,635.32/x
  3. Step 3: Cross multiply
    128,897.79x = 193,300.54 × 44,635.32
  4. Step 4: Simplify right side
    128,897.79x = 8,628,031,459.07
  5. Step 5: Solve for x
    x = 8,628,031,459.07/128,897.79
  6. Step 6: Final answer
    x = 66,937.00

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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.