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Finding the Fourth Proportional to 19,699.87, 29,539.95 and 6,547.63

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Solution

The fourth proportional to 19,699.87, 29,539.95 and 6,547.63 is: 9,818.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,699.87 : 29,539.95 = 6,547.63 : x
  2. Step 2: Convert to fraction form
    19,699.87/29,539.95 = 6,547.63/x
  3. Step 3: Cross multiply
    19,699.87x = 29,539.95 × 6,547.63
  4. Step 4: Simplify right side
    19,699.87x = 193,416,662.82
  5. Step 5: Solve for x
    x = 193,416,662.82/19,699.87
  6. Step 6: Final answer
    x = 9,818.17

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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.