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Finding the Fourth Proportional to 93,349.84, 128,825.34 and 57,057.16

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Solution

The fourth proportional to 93,349.84, 128,825.34 and 57,057.16 is: 78,740.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,349.84 : 128,825.34 = 57,057.16 : x
  2. Step 2: Convert to fraction form
    93,349.84/128,825.34 = 57,057.16/x
  3. Step 3: Cross multiply
    93,349.84x = 128,825.34 × 57,057.16
  4. Step 4: Simplify right side
    93,349.84x = 7,350,408,036.43
  5. Step 5: Solve for x
    x = 7,350,408,036.43/93,349.84
  6. Step 6: Final answer
    x = 78,740.45

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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.