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Finding the Fourth Proportional to 606,907.60, 911,345.55 and 439,602.10

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Solution

The fourth proportional to 606,907.60, 911,345.55 and 439,602.10 is: 660,116.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,907.60 : 911,345.55 = 439,602.10 : x
  2. Step 2: Convert to fraction form
    606,907.60/911,345.55 = 439,602.10/x
  3. Step 3: Cross multiply
    606,907.60x = 911,345.55 × 439,602.10
  4. Step 4: Simplify right side
    606,907.60x = 400,629,417,605.66
  5. Step 5: Solve for x
    x = 400,629,417,605.66/606,907.60
  6. Step 6: Final answer
    x = 660,116.00

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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.