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Finding the Fourth Proportional to 191,615.88, 287,298.66 and 91,772.88

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Solution

The fourth proportional to 191,615.88, 287,298.66 and 91,772.88 is: 137,599.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,615.88 : 287,298.66 = 91,772.88 : x
  2. Step 2: Convert to fraction form
    191,615.88/287,298.66 = 91,772.88/x
  3. Step 3: Cross multiply
    191,615.88x = 287,298.66 × 91,772.88
  4. Step 4: Simplify right side
    191,615.88x = 26,366,225,448.34
  5. Step 5: Solve for x
    x = 26,366,225,448.34/191,615.88
  6. Step 6: Final answer
    x = 137,599.38

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1.5x scale

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.