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Finding the Fourth Proportional to 56,187.96, 77,532.78 and 31,035.96

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Solution

The fourth proportional to 56,187.96, 77,532.78 and 31,035.96 is: 42,825.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,187.96 : 77,532.78 = 31,035.96 : x
  2. Step 2: Convert to fraction form
    56,187.96/77,532.78 = 31,035.96/x
  3. Step 3: Cross multiply
    56,187.96x = 77,532.78 × 31,035.96
  4. Step 4: Simplify right side
    56,187.96x = 2,406,304,258.77
  5. Step 5: Solve for x
    x = 2,406,304,258.77/56,187.96
  6. Step 6: Final answer
    x = 42,825.98

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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.