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Finding the Fourth Proportional to 191,534.58, 287,338.86 and 65,169.72

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Solution

The fourth proportional to 191,534.58, 287,338.86 and 65,169.72 is: 97,767.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,534.58 : 287,338.86 = 65,169.72 : x
  2. Step 2: Convert to fraction form
    191,534.58/287,338.86 = 65,169.72/x
  3. Step 3: Cross multiply
    191,534.58x = 287,338.86 × 65,169.72
  4. Step 4: Simplify right side
    191,534.58x = 18,725,793,051.32
  5. Step 5: Solve for x
    x = 18,725,793,051.32/191,534.58
  6. Step 6: Final answer
    x = 97,767.17

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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.