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Finding the Fourth Proportional to 583,409.40, 875,114.10 and 499,428.60

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Solution

The fourth proportional to 583,409.40, 875,114.10 and 499,428.60 is: 749,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,409.40 : 875,114.10 = 499,428.60 : x
  2. Step 2: Convert to fraction form
    583,409.40/875,114.10 = 499,428.60/x
  3. Step 3: Cross multiply
    583,409.40x = 875,114.10 × 499,428.60
  4. Step 4: Simplify right side
    583,409.40x = 437,057,009,803.26
  5. Step 5: Solve for x
    x = 437,057,009,803.26/583,409.40
  6. Step 6: Final answer
    x = 749,142.90

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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.