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Finding the Fourth Proportional to 93,411.76, 128,904.78 and 50,969.38

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Solution

The fourth proportional to 93,411.76, 128,904.78 and 50,969.38 is: 70,335.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,411.76 : 128,904.78 = 50,969.38 : x
  2. Step 2: Convert to fraction form
    93,411.76/128,904.78 = 50,969.38/x
  3. Step 3: Cross multiply
    93,411.76x = 128,904.78 × 50,969.38
  4. Step 4: Simplify right side
    93,411.76x = 6,570,196,715.64
  5. Step 5: Solve for x
    x = 6,570,196,715.64/93,411.76
  6. Step 6: Final answer
    x = 70,335.86

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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.