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Finding the Fourth Proportional to 103,957.80, 143,461.58 and 58,635.64

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Solution

The fourth proportional to 103,957.80, 143,461.58 and 58,635.64 is: 80,917.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,957.80 : 143,461.58 = 58,635.64 : x
  2. Step 2: Convert to fraction form
    103,957.80/143,461.58 = 58,635.64/x
  3. Step 3: Cross multiply
    103,957.80x = 143,461.58 × 58,635.64
  4. Step 4: Simplify right side
    103,957.80x = 8,411,961,558.71
  5. Step 5: Solve for x
    x = 8,411,961,558.71/103,957.80
  6. Step 6: Final answer
    x = 80,917.08

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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.