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Finding the Fourth Proportional to 876,471.60, 1,209,530.76 and 474,063.60

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Solution

The fourth proportional to 876,471.60, 1,209,530.76 and 474,063.60 is: 654,207.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,471.60 : 1,209,530.76 = 474,063.60 : x
  2. Step 2: Convert to fraction form
    876,471.60/1,209,530.76 = 474,063.60/x
  3. Step 3: Cross multiply
    876,471.60x = 1,209,530.76 × 474,063.60
  4. Step 4: Simplify right side
    876,471.60x = 573,394,506,396.34
  5. Step 5: Solve for x
    x = 573,394,506,396.34/876,471.60
  6. Step 6: Final answer
    x = 654,207.74

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.