Home / 12,395,419.20-18,593,128.80-8,781,620.40

Finding the Fourth Proportional to 12,395,419.20, 18,593,128.80 and 8,781,620.40

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Solution

The fourth proportional to 12,395,419.20, 18,593,128.80 and 8,781,620.40 is: 13,172,430.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,395,419.20 : 18,593,128.80 = 8,781,620.40 : x
  2. Step 2: Convert to fraction form
    12,395,419.20/18,593,128.80 = 8,781,620.40/x
  3. Step 3: Cross multiply
    12,395,419.20x = 18,593,128.80 × 8,781,620.40
  4. Step 4: Simplify right side
    12,395,419.20x = 163,277,799,169,907.53
  5. Step 5: Solve for x
    x = 163,277,799,169,907.53/12,395,419.20
  6. Step 6: Final answer
    x = 13,172,430.60

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1.5x scale

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.