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Finding the Fourth Proportional to 713,107.80, 1,069,661.70 and 608,131.80

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Solution

The fourth proportional to 713,107.80, 1,069,661.70 and 608,131.80 is: 912,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,107.80 : 1,069,661.70 = 608,131.80 : x
  2. Step 2: Convert to fraction form
    713,107.80/1,069,661.70 = 608,131.80/x
  3. Step 3: Cross multiply
    713,107.80x = 1,069,661.70 × 608,131.80
  4. Step 4: Simplify right side
    713,107.80x = 650,495,295,012.06
  5. Step 5: Solve for x
    x = 650,495,295,012.06/713,107.80
  6. Step 6: Final answer
    x = 912,197.70

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Double scale
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Similar ratio
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1.5x scale

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.