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Finding the Fourth Proportional to 104,059.55, 143,602.16 and 56,312.90

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Solution

The fourth proportional to 104,059.55, 143,602.16 and 56,312.90 is: 77,711.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,059.55 : 143,602.16 = 56,312.90 : x
  2. Step 2: Convert to fraction form
    104,059.55/143,602.16 = 56,312.90/x
  3. Step 3: Cross multiply
    104,059.55x = 143,602.16 × 56,312.90
  4. Step 4: Simplify right side
    104,059.55x = 8,086,653,498.64
  5. Step 5: Solve for x
    x = 8,086,653,498.64/104,059.55
  6. Step 6: Final answer
    x = 77,711.79

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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.