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Finding the Fourth Proportional to 92,564.55, 138,735.54 and 42,575.76

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Solution

The fourth proportional to 92,564.55, 138,735.54 and 42,575.76 is: 63,812.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,564.55 : 138,735.54 = 42,575.76 : x
  2. Step 2: Convert to fraction form
    92,564.55/138,735.54 = 42,575.76/x
  3. Step 3: Cross multiply
    92,564.55x = 138,735.54 × 42,575.76
  4. Step 4: Simplify right side
    92,564.55x = 5,906,771,054.51
  5. Step 5: Solve for x
    x = 5,906,771,054.51/92,564.55
  6. Step 6: Final answer
    x = 63,812.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.