Home / 19,138,809.60-28,708,214.40-18,886,867.20

Finding the Fourth Proportional to 19,138,809.60, 28,708,214.40 and 18,886,867.20

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Solution

The fourth proportional to 19,138,809.60, 28,708,214.40 and 18,886,867.20 is: 28,330,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138,809.60 : 28,708,214.40 = 18,886,867.20 : x
  2. Step 2: Convert to fraction form
    19,138,809.60/28,708,214.40 = 18,886,867.20/x
  3. Step 3: Cross multiply
    19,138,809.60x = 28,708,214.40 × 18,886,867.20
  4. Step 4: Simplify right side
    19,138,809.60x = 542,208,232,921,927.62
  5. Step 5: Solve for x
    x = 542,208,232,921,927.62/19,138,809.60
  6. Step 6: Final answer
    x = 28,330,300.80

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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.