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Finding the Fourth Proportional to 1,935,967.89, 2,671,637.90 and 1,076,509.69

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Solution

The fourth proportional to 1,935,967.89, 2,671,637.90 and 1,076,509.69 is: 1,485,584.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,935,967.89 : 2,671,637.90 = 1,076,509.69 : x
  2. Step 2: Convert to fraction form
    1,935,967.89/2,671,637.90 = 1,076,509.69/x
  3. Step 3: Cross multiply
    1,935,967.89x = 2,671,637.90 × 1,076,509.69
  4. Step 4: Simplify right side
    1,935,967.89x = 2,876,044,087,521.25
  5. Step 5: Solve for x
    x = 2,876,044,087,521.25/1,935,967.89
  6. Step 6: Final answer
    x = 1,485,584.60

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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.