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Finding the Fourth Proportional to 216,381.51, 324,088.29 and 125,085.06

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Solution

The fourth proportional to 216,381.51, 324,088.29 and 125,085.06 is: 187,347.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,381.51 : 324,088.29 = 125,085.06 : x
  2. Step 2: Convert to fraction form
    216,381.51/324,088.29 = 125,085.06/x
  3. Step 3: Cross multiply
    216,381.51x = 324,088.29 × 125,085.06
  4. Step 4: Simplify right side
    216,381.51x = 40,538,603,199.95
  5. Step 5: Solve for x
    x = 40,538,603,199.95/216,381.51
  6. Step 6: Final answer
    x = 187,347.82

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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.