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Finding the Fourth Proportional to 191,504.34, 287,256.81 and 79,061.15

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Solution

The fourth proportional to 191,504.34, 287,256.81 and 79,061.15 is: 118,591.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,504.34 : 287,256.81 = 79,061.15 : x
  2. Step 2: Convert to fraction form
    191,504.34/287,256.81 = 79,061.15/x
  3. Step 3: Cross multiply
    191,504.34x = 287,256.81 × 79,061.15
  4. Step 4: Simplify right side
    191,504.34x = 22,710,852,307.65
  5. Step 5: Solve for x
    x = 22,710,852,307.65/191,504.34
  6. Step 6: Final answer
    x = 118,591.84

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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.