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Finding the Fourth Proportional to 88,276, 121,820.88 and 48,532

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Solution

The fourth proportional to 88,276, 121,820.88 and 48,532 is: 66,974.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,276 : 121,820.88 = 48,532 : x
  2. Step 2: Convert to fraction form
    88,276/121,820.88 = 48,532/x
  3. Step 3: Cross multiply
    88,276x = 121,820.88 × 48,532
  4. Step 4: Simplify right side
    88,276x = 5,912,210,948.16
  5. Step 5: Solve for x
    x = 5,912,210,948.16/88,276
  6. Step 6: Final answer
    x = 66,974.16

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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.