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Finding the Fourth Proportional to 93,069.88, 128,407.44 and 52,780.48

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Solution

The fourth proportional to 93,069.88, 128,407.44 and 52,780.48 is: 72,820.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,069.88 : 128,407.44 = 52,780.48 : x
  2. Step 2: Convert to fraction form
    93,069.88/128,407.44 = 52,780.48/x
  3. Step 3: Cross multiply
    93,069.88x = 128,407.44 × 52,780.48
  4. Step 4: Simplify right side
    93,069.88x = 6,777,406,318.77
  5. Step 5: Solve for x
    x = 6,777,406,318.77/93,069.88
  6. Step 6: Final answer
    x = 72,820.62

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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.