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Finding the Fourth Proportional to 191,811.98, 287,705.97 and 58,681.70

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Solution

The fourth proportional to 191,811.98, 287,705.97 and 58,681.70 is: 88,018.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,811.98 : 287,705.97 = 58,681.70 : x
  2. Step 2: Convert to fraction form
    191,811.98/287,705.97 = 58,681.70/x
  3. Step 3: Cross multiply
    191,811.98x = 287,705.97 × 58,681.70
  4. Step 4: Simplify right side
    191,811.98x = 16,883,075,419.75
  5. Step 5: Solve for x
    x = 16,883,075,419.75/191,811.98
  6. Step 6: Final answer
    x = 88,018.88

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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.