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Finding the Fourth Proportional to 66,379.34, 99,547.47 and 21,994.17

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Solution

The fourth proportional to 66,379.34, 99,547.47 and 21,994.17 is: 32,984.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,379.34 : 99,547.47 = 21,994.17 : x
  2. Step 2: Convert to fraction form
    66,379.34/99,547.47 = 21,994.17/x
  3. Step 3: Cross multiply
    66,379.34x = 99,547.47 × 21,994.17
  4. Step 4: Simplify right side
    66,379.34x = 2,189,464,226.76
  5. Step 5: Solve for x
    x = 2,189,464,226.76/66,379.34
  6. Step 6: Final answer
    x = 32,984.12

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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.