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Finding the Fourth Proportional to 660,473.19, 911,140.04 and 445,682.45

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Solution

The fourth proportional to 660,473.19, 911,140.04 and 445,682.45 is: 614,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,473.19 : 911,140.04 = 445,682.45 : x
  2. Step 2: Convert to fraction form
    660,473.19/911,140.04 = 445,682.45/x
  3. Step 3: Cross multiply
    660,473.19x = 911,140.04 × 445,682.45
  4. Step 4: Simplify right side
    660,473.19x = 406,079,128,712.35
  5. Step 5: Solve for x
    x = 406,079,128,712.35/660,473.19
  6. Step 6: Final answer
    x = 614,830.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.