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Finding the Fourth Proportional to 1,932,355.08, 2,666,978.01 and 1,117,031.40

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Solution

The fourth proportional to 1,932,355.08, 2,666,978.01 and 1,117,031.40 is: 1,541,692.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,932,355.08 : 2,666,978.01 = 1,117,031.40 : x
  2. Step 2: Convert to fraction form
    1,932,355.08/2,666,978.01 = 1,117,031.40/x
  3. Step 3: Cross multiply
    1,932,355.08x = 2,666,978.01 × 1,117,031.40
  4. Step 4: Simplify right side
    1,932,355.08x = 2,979,098,180,279.51
  5. Step 5: Solve for x
    x = 2,979,098,180,279.51/1,932,355.08
  6. Step 6: Final answer
    x = 1,541,692.94

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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.