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Finding the Fourth Proportional to 583,407.40, 875,111.10 and 499,426.60

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Solution

The fourth proportional to 583,407.40, 875,111.10 and 499,426.60 is: 749,139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,407.40 : 875,111.10 = 499,426.60 : x
  2. Step 2: Convert to fraction form
    583,407.40/875,111.10 = 499,426.60/x
  3. Step 3: Cross multiply
    583,407.40x = 875,111.10 × 499,426.60
  4. Step 4: Simplify right side
    583,407.40x = 437,053,761,295.26
  5. Step 5: Solve for x
    x = 437,053,761,295.26/583,407.40
  6. Step 6: Final answer
    x = 749,139.90

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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.