Home / 216,681.12-324,671.76-83,405.34

Finding the Fourth Proportional to 216,681.12, 324,671.76 and 83,405.34

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Solution

The fourth proportional to 216,681.12, 324,671.76 and 83,405.34 is: 124,973.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,681.12 : 324,671.76 = 83,405.34 : x
  2. Step 2: Convert to fraction form
    216,681.12/324,671.76 = 83,405.34/x
  3. Step 3: Cross multiply
    216,681.12x = 324,671.76 × 83,405.34
  4. Step 4: Simplify right side
    216,681.12x = 27,079,358,531.20
  5. Step 5: Solve for x
    x = 27,079,358,531.20/216,681.12
  6. Step 6: Final answer
    x = 124,973.32

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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.