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Finding the Fourth Proportional to 93,418.82, 128,920.70 and 50,980.08

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Solution

The fourth proportional to 93,418.82, 128,920.70 and 50,980.08 is: 70,354.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,418.82 : 128,920.70 = 50,980.08 : x
  2. Step 2: Convert to fraction form
    93,418.82/128,920.70 = 50,980.08/x
  3. Step 3: Cross multiply
    93,418.82x = 128,920.70 × 50,980.08
  4. Step 4: Simplify right side
    93,418.82x = 6,572,387,344.76
  5. Step 5: Solve for x
    x = 6,572,387,344.76/93,418.82
  6. Step 6: Final answer
    x = 70,354.00

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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.