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Finding the Fourth Proportional to 93,065.12, 128,400.90 and 52,775.72

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Solution

The fourth proportional to 93,065.12, 128,400.90 and 52,775.72 is: 72,814.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,065.12 : 128,400.90 = 52,775.72 : x
  2. Step 2: Convert to fraction form
    93,065.12/128,400.90 = 52,775.72/x
  3. Step 3: Cross multiply
    93,065.12x = 128,400.90 × 52,775.72
  4. Step 4: Simplify right side
    93,065.12x = 6,776,449,946.15
  5. Step 5: Solve for x
    x = 6,776,449,946.15/93,065.12
  6. Step 6: Final answer
    x = 72,814.07

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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.