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Finding the Fourth Proportional to 8,347.81, 11,520.11 and 4,570.91

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Solution

The fourth proportional to 8,347.81, 11,520.11 and 4,570.91 is: 6,307.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347.81 : 11,520.11 = 4,570.91 : x
  2. Step 2: Convert to fraction form
    8,347.81/11,520.11 = 4,570.91/x
  3. Step 3: Cross multiply
    8,347.81x = 11,520.11 × 4,570.91
  4. Step 4: Simplify right side
    8,347.81x = 52,657,386.00
  5. Step 5: Solve for x
    x = 52,657,386.00/8,347.81
  6. Step 6: Final answer
    x = 6,307.93

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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.