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Finding the Fourth Proportional to 70,498.98, 105,714.99 and 40,925.88

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Solution

The fourth proportional to 70,498.98, 105,714.99 and 40,925.88 is: 61,369.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,498.98 : 105,714.99 = 40,925.88 : x
  2. Step 2: Convert to fraction form
    70,498.98/105,714.99 = 40,925.88/x
  3. Step 3: Cross multiply
    70,498.98x = 105,714.99 × 40,925.88
  4. Step 4: Simplify right side
    70,498.98x = 4,326,478,994.94
  5. Step 5: Solve for x
    x = 4,326,478,994.94/70,498.98
  6. Step 6: Final answer
    x = 61,369.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.