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Finding the Third Proportional to 1,272,641.63 and 1,780,177.50

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Solution

The third proportional to 1,272,641.63 and 1,780,177.50 is: 2,490,121.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,641.63 : 1,780,177.50 = 1,780,177.50 : x
  2. Step 2: Convert to fraction form
    1,272,641.63/1,780,177.50 = 1,780,177.50/x
  3. Step 3: Cross multiply
    1,272,641.63x = 1,780,177.50 × 1,780,177.50
  4. Step 4: Simplify right side
    1,272,641.63x = 3,169,031,931,506.25
  5. Step 5: Solve for x
    x = 3,169,031,931,506.25/1,272,641.63
  6. Step 6: Final answer
    x = 2,490,121.23

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.