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Finding the Fourth Proportional to 93,117.55, 128,504.91 and 50,678.77

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Solution

The fourth proportional to 93,117.55, 128,504.91 and 50,678.77 is: 69,938.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,117.55 : 128,504.91 = 50,678.77 : x
  2. Step 2: Convert to fraction form
    93,117.55/128,504.91 = 50,678.77/x
  3. Step 3: Cross multiply
    93,117.55x = 128,504.91 × 50,678.77
  4. Step 4: Simplify right side
    93,117.55x = 6,512,470,777.76
  5. Step 5: Solve for x
    x = 6,512,470,777.76/93,117.55
  6. Step 6: Final answer
    x = 69,938.17

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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.