Home / 19,918,885.60-29,878,328.40-13,116,440.80

Finding the Fourth Proportional to 19,918,885.60, 29,878,328.40 and 13,116,440.80

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Solution

The fourth proportional to 19,918,885.60, 29,878,328.40 and 13,116,440.80 is: 19,674,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918,885.60 : 29,878,328.40 = 13,116,440.80 : x
  2. Step 2: Convert to fraction form
    19,918,885.60/29,878,328.40 = 13,116,440.80/x
  3. Step 3: Cross multiply
    19,918,885.60x = 29,878,328.40 × 13,116,440.80
  4. Step 4: Simplify right side
    19,918,885.60x = 391,897,325,661,558.75
  5. Step 5: Solve for x
    x = 391,897,325,661,558.75/19,918,885.60
  6. Step 6: Final answer
    x = 19,674,661.20

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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.