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Finding the Fourth Proportional to 125,133.46, 172,694.81 and 70,695.63

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Solution

The fourth proportional to 125,133.46, 172,694.81 and 70,695.63 is: 97,565.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,133.46 : 172,694.81 = 70,695.63 : x
  2. Step 2: Convert to fraction form
    125,133.46/172,694.81 = 70,695.63/x
  3. Step 3: Cross multiply
    125,133.46x = 172,694.81 × 70,695.63
  4. Step 4: Simplify right side
    125,133.46x = 12,208,768,567.42
  5. Step 5: Solve for x
    x = 12,208,768,567.42/125,133.46
  6. Step 6: Final answer
    x = 97,565.98

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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.