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Finding the Fourth Proportional to 713,090.70, 1,069,636.05 and 554,460.30

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Solution

The fourth proportional to 713,090.70, 1,069,636.05 and 554,460.30 is: 831,690.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,090.70 : 1,069,636.05 = 554,460.30 : x
  2. Step 2: Convert to fraction form
    713,090.70/1,069,636.05 = 554,460.30/x
  3. Step 3: Cross multiply
    713,090.70x = 1,069,636.05 × 554,460.30
  4. Step 4: Simplify right side
    713,090.70x = 593,070,725,173.82
  5. Step 5: Solve for x
    x = 593,070,725,173.82/713,090.70
  6. Step 6: Final answer
    x = 831,690.45

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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.