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Finding the Fourth Proportional to 93,356.25, 128,809.47 and 53,066.85

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Solution

The fourth proportional to 93,356.25, 128,809.47 and 53,066.85 is: 73,219.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,356.25 : 128,809.47 = 53,066.85 : x
  2. Step 2: Convert to fraction form
    93,356.25/128,809.47 = 53,066.85/x
  3. Step 3: Cross multiply
    93,356.25x = 128,809.47 × 53,066.85
  4. Step 4: Simplify right side
    93,356.25x = 6,835,512,823.07
  5. Step 5: Solve for x
    x = 6,835,512,823.07/93,356.25
  6. Step 6: Final answer
    x = 73,219.66

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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.