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Finding the Fourth Proportional to 93,059.68, 128,421.38 and 50,618.20

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Solution

The fourth proportional to 93,059.68, 128,421.38 and 50,618.20 is: 69,852.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,059.68 : 128,421.38 = 50,618.20 : x
  2. Step 2: Convert to fraction form
    93,059.68/128,421.38 = 50,618.20/x
  3. Step 3: Cross multiply
    93,059.68x = 128,421.38 × 50,618.20
  4. Step 4: Simplify right side
    93,059.68x = 6,500,459,097.12
  5. Step 5: Solve for x
    x = 6,500,459,097.12/93,059.68
  6. Step 6: Final answer
    x = 69,852.58

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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.