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Finding the Fourth Proportional to 93,220.88, 128,644.62 and 50,779.31

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Solution

The fourth proportional to 93,220.88, 128,644.62 and 50,779.31 is: 70,075.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,220.88 : 128,644.62 = 50,779.31 : x
  2. Step 2: Convert to fraction form
    93,220.88/128,644.62 = 50,779.31/x
  3. Step 3: Cross multiply
    93,220.88x = 128,644.62 × 50,779.31
  4. Step 4: Simplify right side
    93,220.88x = 6,532,485,038.81
  5. Step 5: Solve for x
    x = 6,532,485,038.81/93,220.88
  6. Step 6: Final answer
    x = 70,075.34

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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.