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Finding the Fourth Proportional to 43,808,541.80, 65,712,812.70 and 19,547,421.80

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Solution

The fourth proportional to 43,808,541.80, 65,712,812.70 and 19,547,421.80 is: 29,321,132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,808,541.80 : 65,712,812.70 = 19,547,421.80 : x
  2. Step 2: Convert to fraction form
    43,808,541.80/65,712,812.70 = 19,547,421.80/x
  3. Step 3: Cross multiply
    43,808,541.80x = 65,712,812.70 × 19,547,421.80
  4. Step 4: Simplify right side
    43,808,541.80x = 1,284,516,067,511,297
  5. Step 5: Solve for x
    x = 1,284,516,067,511,297/43,808,541.80
  6. Step 6: Final answer
    x = 29,321,132.70

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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.