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Finding the Fourth Proportional to 93,281.48, 128,731.14 and 50,842.76

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Solution

The fourth proportional to 93,281.48, 128,731.14 and 50,842.76 is: 70,164.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,281.48 : 128,731.14 = 50,842.76 : x
  2. Step 2: Convert to fraction form
    93,281.48/128,731.14 = 50,842.76/x
  3. Step 3: Cross multiply
    93,281.48x = 128,731.14 × 50,842.76
  4. Step 4: Simplify right side
    93,281.48x = 6,545,046,455.55
  5. Step 5: Solve for x
    x = 6,545,046,455.55/93,281.48
  6. Step 6: Final answer
    x = 70,164.48

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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.