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Finding the Fourth Proportional to 92,948.75, 128,270.08 and 50,507.28

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Solution

The fourth proportional to 92,948.75, 128,270.08 and 50,507.28 is: 69,700.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,948.75 : 128,270.08 = 50,507.28 : x
  2. Step 2: Convert to fraction form
    92,948.75/128,270.08 = 50,507.28/x
  3. Step 3: Cross multiply
    92,948.75x = 128,270.08 × 50,507.28
  4. Step 4: Simplify right side
    92,948.75x = 6,478,572,909.32
  5. Step 5: Solve for x
    x = 6,478,572,909.32/92,948.75
  6. Step 6: Final answer
    x = 69,700.49

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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.