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Finding the Fourth Proportional to 93,618.16, 129,193.32 and 55,891.60

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Solution

The fourth proportional to 93,618.16, 129,193.32 and 55,891.60 is: 77,130.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,618.16 : 129,193.32 = 55,891.60 : x
  2. Step 2: Convert to fraction form
    93,618.16/129,193.32 = 55,891.60/x
  3. Step 3: Cross multiply
    93,618.16x = 129,193.32 × 55,891.60
  4. Step 4: Simplify right side
    93,618.16x = 7,220,821,364.11
  5. Step 5: Solve for x
    x = 7,220,821,364.11/93,618.16
  6. Step 6: Final answer
    x = 77,130.56

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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.