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Finding the Fourth Proportional to 540,690.90, 811,036.35 and 540,690.90

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Solution

The fourth proportional to 540,690.90, 811,036.35 and 540,690.90 is: 811,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,690.90 : 811,036.35 = 540,690.90 : x
  2. Step 2: Convert to fraction form
    540,690.90/811,036.35 = 540,690.90/x
  3. Step 3: Cross multiply
    540,690.90x = 811,036.35 × 540,690.90
  4. Step 4: Simplify right side
    540,690.90x = 438,519,974,014.22
  5. Step 5: Solve for x
    x = 438,519,974,014.22/540,690.90
  6. Step 6: Final answer
    x = 811,036.35

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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.