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Finding the Fourth Proportional to 93,312.74, 128,769 and 50,871.26

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Solution

The fourth proportional to 93,312.74, 128,769 and 50,871.26 is: 70,200.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312.74 : 128,769 = 50,871.26 : x
  2. Step 2: Convert to fraction form
    93,312.74/128,769 = 50,871.26/x
  3. Step 3: Cross multiply
    93,312.74x = 128,769 × 50,871.26
  4. Step 4: Simplify right side
    93,312.74x = 6,550,641,278.94
  5. Step 5: Solve for x
    x = 6,550,641,278.94/93,312.74
  6. Step 6: Final answer
    x = 70,200.93

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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.