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Finding the Fourth Proportional to 191,938.99, 287,908.45 and 103,070.24

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Solution

The fourth proportional to 191,938.99, 287,908.45 and 103,070.24 is: 154,605.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,938.99 : 287,908.45 = 103,070.24 : x
  2. Step 2: Convert to fraction form
    191,938.99/287,908.45 = 103,070.24/x
  3. Step 3: Cross multiply
    191,938.99x = 287,908.45 × 103,070.24
  4. Step 4: Simplify right side
    191,938.99x = 29,674,793,501.62
  5. Step 5: Solve for x
    x = 29,674,793,501.62/191,938.99
  6. Step 6: Final answer
    x = 154,605.35

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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.