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Finding the Fourth Proportional to 875,770.40, 1,313,655.60 and 476,256.80

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Solution

The fourth proportional to 875,770.40, 1,313,655.60 and 476,256.80 is: 714,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,770.40 : 1,313,655.60 = 476,256.80 : x
  2. Step 2: Convert to fraction form
    875,770.40/1,313,655.60 = 476,256.80/x
  3. Step 3: Cross multiply
    875,770.40x = 1,313,655.60 × 476,256.80
  4. Step 4: Simplify right side
    875,770.40x = 625,637,412,358.08
  5. Step 5: Solve for x
    x = 625,637,412,358.08/875,770.40
  6. Step 6: Final answer
    x = 714,385.20

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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.