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Finding the Fourth Proportional to 93,115.71, 128,490.79 and 52,270.48

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Solution

The fourth proportional to 93,115.71, 128,490.79 and 52,270.48 is: 72,128.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,115.71 : 128,490.79 = 52,270.48 : x
  2. Step 2: Convert to fraction form
    93,115.71/128,490.79 = 52,270.48/x
  3. Step 3: Cross multiply
    93,115.71x = 128,490.79 × 52,270.48
  4. Step 4: Simplify right side
    93,115.71x = 6,716,275,075.27
  5. Step 5: Solve for x
    x = 6,716,275,075.27/93,115.71
  6. Step 6: Final answer
    x = 72,128.27

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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.