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Finding the Fourth Proportional to 553,266.90, 829,900.35 and 317,070.90

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Solution

The fourth proportional to 553,266.90, 829,900.35 and 317,070.90 is: 475,606.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,266.90 : 829,900.35 = 317,070.90 : x
  2. Step 2: Convert to fraction form
    553,266.90/829,900.35 = 317,070.90/x
  3. Step 3: Cross multiply
    553,266.90x = 829,900.35 × 317,070.90
  4. Step 4: Simplify right side
    553,266.90x = 263,137,250,884.82
  5. Step 5: Solve for x
    x = 263,137,250,884.82/553,266.90
  6. Step 6: Final answer
    x = 475,606.35

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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.