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Finding the Fourth Proportional to 93,123.16, 128,509.96 and 50,681.99

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Solution

The fourth proportional to 93,123.16, 128,509.96 and 50,681.99 is: 69,941.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,123.16 : 128,509.96 = 50,681.99 : x
  2. Step 2: Convert to fraction form
    93,123.16/128,509.96 = 50,681.99/x
  3. Step 3: Cross multiply
    93,123.16x = 128,509.96 × 50,681.99
  4. Step 4: Simplify right side
    93,123.16x = 6,513,140,507.62
  5. Step 5: Solve for x
    x = 6,513,140,507.62/93,123.16
  6. Step 6: Final answer
    x = 69,941.15

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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.