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Finding the Fourth Proportional to 93,153, 128,551.14 and 50,709

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Solution

The fourth proportional to 93,153, 128,551.14 and 50,709 is: 69,978.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,153 : 128,551.14 = 50,709 : x
  2. Step 2: Convert to fraction form
    93,153/128,551.14 = 50,709/x
  3. Step 3: Cross multiply
    93,153x = 128,551.14 × 50,709
  4. Step 4: Simplify right side
    93,153x = 6,518,699,758.26
  5. Step 5: Solve for x
    x = 6,518,699,758.26/93,153
  6. Step 6: Final answer
    x = 69,978.42

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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.