Home / 19,138,812.60-28,708,218.90-18,886,870.20

Finding the Fourth Proportional to 19,138,812.60, 28,708,218.90 and 18,886,870.20

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Solution

The fourth proportional to 19,138,812.60, 28,708,218.90 and 18,886,870.20 is: 28,330,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138,812.60 : 28,708,218.90 = 18,886,870.20 : x
  2. Step 2: Convert to fraction form
    19,138,812.60/28,708,218.90 = 18,886,870.20/x
  3. Step 3: Cross multiply
    19,138,812.60x = 28,708,218.90 × 18,886,870.20
  4. Step 4: Simplify right side
    19,138,812.60x = 542,208,404,037,486.75
  5. Step 5: Solve for x
    x = 542,208,404,037,486.75/19,138,812.60
  6. Step 6: Final answer
    x = 28,330,305.30

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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.