Home / 66,378.90-99,587.80-19,632.98

Finding the Fourth Proportional to 66,378.90, 99,587.80 and 19,632.98

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Solution

The fourth proportional to 66,378.90, 99,587.80 and 19,632.98 is: 29,455.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,378.90 : 99,587.80 = 19,632.98 : x
  2. Step 2: Convert to fraction form
    66,378.90/99,587.80 = 19,632.98/x
  3. Step 3: Cross multiply
    66,378.90x = 99,587.80 × 19,632.98
  4. Step 4: Simplify right side
    66,378.90x = 1,955,205,285.64
  5. Step 5: Solve for x
    x = 1,955,205,285.64/66,378.90
  6. Step 6: Final answer
    x = 29,455.22

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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.