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Finding the Fourth Proportional to 93,316.50, 128,780.01 and 53,031.96

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Solution

The fourth proportional to 93,316.50, 128,780.01 and 53,031.96 is: 73,185.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,316.50 : 128,780.01 = 53,031.96 : x
  2. Step 2: Convert to fraction form
    93,316.50/128,780.01 = 53,031.96/x
  3. Step 3: Cross multiply
    93,316.50x = 128,780.01 × 53,031.96
  4. Step 4: Simplify right side
    93,316.50x = 6,829,456,339.12
  5. Step 5: Solve for x
    x = 6,829,456,339.12/93,316.50
  6. Step 6: Final answer
    x = 73,185.95

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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.