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Finding the Fourth Proportional to 191,639.88, 287,477.57 and 65,237.65

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Solution

The fourth proportional to 191,639.88, 287,477.57 and 65,237.65 is: 97,862.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,639.88 : 287,477.57 = 65,237.65 : x
  2. Step 2: Convert to fraction form
    191,639.88/287,477.57 = 65,237.65/x
  3. Step 3: Cross multiply
    191,639.88x = 287,477.57 × 65,237.65
  4. Step 4: Simplify right side
    191,639.88x = 18,754,360,538.91
  5. Step 5: Solve for x
    x = 18,754,360,538.91/191,639.88
  6. Step 6: Final answer
    x = 97,862.51

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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.