Home / 21,875,419.20-32,813,128.80-19,418,980.80

Finding the Fourth Proportional to 21,875,419.20, 32,813,128.80 and 19,418,980.80

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Solution

The fourth proportional to 21,875,419.20, 32,813,128.80 and 19,418,980.80 is: 29,128,471.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,875,419.20 : 32,813,128.80 = 19,418,980.80 : x
  2. Step 2: Convert to fraction form
    21,875,419.20/32,813,128.80 = 19,418,980.80/x
  3. Step 3: Cross multiply
    21,875,419.20x = 32,813,128.80 × 19,418,980.80
  4. Step 4: Simplify right side
    21,875,419.20x = 637,197,518,155,127.12
  5. Step 5: Solve for x
    x = 637,197,518,155,127.12/21,875,419.20
  6. Step 6: Final answer
    x = 29,128,471.20

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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.