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Finding the Fourth Proportional to 713,080.80, 1,069,621.20 and 608,104.80

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Solution

The fourth proportional to 713,080.80, 1,069,621.20 and 608,104.80 is: 912,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,080.80 : 1,069,621.20 = 608,104.80 : x
  2. Step 2: Convert to fraction form
    713,080.80/1,069,621.20 = 608,104.80/x
  3. Step 3: Cross multiply
    713,080.80x = 1,069,621.20 × 608,104.80
  4. Step 4: Simplify right side
    713,080.80x = 650,441,785,901.76
  5. Step 5: Solve for x
    x = 650,441,785,901.76/713,080.80
  6. Step 6: Final answer
    x = 912,157.20

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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.