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Finding the Fourth Proportional to 690,053.44, 947,186 and 612,915.52

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Solution

The fourth proportional to 690,053.44, 947,186 and 612,915.52 is: 841,304.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,053.44 : 947,186 = 612,915.52 : x
  2. Step 2: Convert to fraction form
    690,053.44/947,186 = 612,915.52/x
  3. Step 3: Cross multiply
    690,053.44x = 947,186 × 612,915.52
  4. Step 4: Simplify right side
    690,053.44x = 580,544,999,726.72
  5. Step 5: Solve for x
    x = 580,544,999,726.72/690,053.44
  6. Step 6: Final answer
    x = 841,304.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.