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Finding the Fourth Proportional to 93,123.98, 128,508.62 and 50,681.60

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Solution

The fourth proportional to 93,123.98, 128,508.62 and 50,681.60 is: 69,939.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,123.98 : 128,508.62 = 50,681.60 : x
  2. Step 2: Convert to fraction form
    93,123.98/128,508.62 = 50,681.60/x
  3. Step 3: Cross multiply
    93,123.98x = 128,508.62 × 50,681.60
  4. Step 4: Simplify right side
    93,123.98x = 6,513,022,475.39
  5. Step 5: Solve for x
    x = 6,513,022,475.39/93,123.98
  6. Step 6: Final answer
    x = 69,939.26

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1.5x scale

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.