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Finding the Fourth Proportional to 641,681.40, 885,541.23 and 369,728.22

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Solution

The fourth proportional to 641,681.40, 885,541.23 and 369,728.22 is: 510,236.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,681.40 : 885,541.23 = 369,728.22 : x
  2. Step 2: Convert to fraction form
    641,681.40/885,541.23 = 369,728.22/x
  3. Step 3: Cross multiply
    641,681.40x = 885,541.23 × 369,728.22
  4. Step 4: Simplify right side
    641,681.40x = 327,409,582,704.51
  5. Step 5: Solve for x
    x = 327,409,582,704.51/641,681.40
  6. Step 6: Final answer
    x = 510,236.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.