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Finding the Fourth Proportional to 93,320.61, 128,776.88 and 53,028.78

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Solution

The fourth proportional to 93,320.61, 128,776.88 and 53,028.78 is: 73,176.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,320.61 : 128,776.88 = 53,028.78 : x
  2. Step 2: Convert to fraction form
    93,320.61/128,776.88 = 53,028.78/x
  3. Step 3: Cross multiply
    93,320.61x = 128,776.88 × 53,028.78
  4. Step 4: Simplify right side
    93,320.61x = 6,828,880,971.18
  5. Step 5: Solve for x
    x = 6,828,880,971.18/93,320.61
  6. Step 6: Final answer
    x = 73,176.56

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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.