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Finding the Fourth Proportional to 42,563,685.80, 63,854,859.90 and 13,804,927.40

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Solution

The fourth proportional to 42,563,685.80, 63,854,859.90 and 13,804,927.40 is: 20,710,417.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,563,685.80 : 63,854,859.90 = 13,804,927.40 : x
  2. Step 2: Convert to fraction form
    42,563,685.80/63,854,859.90 = 13,804,927.40/x
  3. Step 3: Cross multiply
    42,563,685.80x = 63,854,859.90 × 13,804,927.40
  4. Step 4: Simplify right side
    42,563,685.80x = 881,511,705,056,671.25
  5. Step 5: Solve for x
    x = 881,511,705,056,671.25/42,563,685.80
  6. Step 6: Final answer
    x = 20,710,417.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.