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Finding the Fourth Proportional to 713,598.80, 1,070,542.20 and 208,158.80

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Solution

The fourth proportional to 713,598.80, 1,070,542.20 and 208,158.80 is: 312,280.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,598.80 : 1,070,542.20 = 208,158.80 : x
  2. Step 2: Convert to fraction form
    713,598.80/1,070,542.20 = 208,158.80/x
  3. Step 3: Cross multiply
    713,598.80x = 1,070,542.20 × 208,158.80
  4. Step 4: Simplify right side
    713,598.80x = 222,842,779,701.36
  5. Step 5: Solve for x
    x = 222,842,779,701.36/713,598.80
  6. Step 6: Final answer
    x = 312,280.21

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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.