Home / 66,386.84-99,580.60-19,640.12

Finding the Fourth Proportional to 66,386.84, 99,580.60 and 19,640.12

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Solution

The fourth proportional to 66,386.84, 99,580.60 and 19,640.12 is: 29,460.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,386.84 : 99,580.60 = 19,640.12 : x
  2. Step 2: Convert to fraction form
    66,386.84/99,580.60 = 19,640.12/x
  3. Step 3: Cross multiply
    66,386.84x = 99,580.60 × 19,640.12
  4. Step 4: Simplify right side
    66,386.84x = 1,955,774,933.67
  5. Step 5: Solve for x
    x = 1,955,774,933.67/66,386.84
  6. Step 6: Final answer
    x = 29,460.28

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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.