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Finding the Fourth Proportional to 208,337.16, 287,510.94 and 127,809.12

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Solution

The fourth proportional to 208,337.16, 287,510.94 and 127,809.12 is: 176,380.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,337.16 : 287,510.94 = 127,809.12 : x
  2. Step 2: Convert to fraction form
    208,337.16/287,510.94 = 127,809.12/x
  3. Step 3: Cross multiply
    208,337.16x = 287,510.94 × 127,809.12
  4. Step 4: Simplify right side
    208,337.16x = 36,746,520,231.77
  5. Step 5: Solve for x
    x = 36,746,520,231.77/208,337.16
  6. Step 6: Final answer
    x = 176,380.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.