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Finding the Fourth Proportional to 93,684.84, 129,283.56 and 51,243

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Solution

The fourth proportional to 93,684.84, 129,283.56 and 51,243 is: 70,714.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,684.84 : 129,283.56 = 51,243 : x
  2. Step 2: Convert to fraction form
    93,684.84/129,283.56 = 51,243/x
  3. Step 3: Cross multiply
    93,684.84x = 129,283.56 × 51,243
  4. Step 4: Simplify right side
    93,684.84x = 6,624,877,465.08
  5. Step 5: Solve for x
    x = 6,624,877,465.08/93,684.84
  6. Step 6: Final answer
    x = 70,714.51

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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.