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Finding the Fourth Proportional to 9,893.61, 13,653.16 and 5,417.35

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Solution

The fourth proportional to 9,893.61, 13,653.16 and 5,417.35 is: 7,475.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,893.61 : 13,653.16 = 5,417.35 : x
  2. Step 2: Convert to fraction form
    9,893.61/13,653.16 = 5,417.35/x
  3. Step 3: Cross multiply
    9,893.61x = 13,653.16 × 5,417.35
  4. Step 4: Simplify right side
    9,893.61x = 73,963,898.65
  5. Step 5: Solve for x
    x = 73,963,898.65/9,893.61
  6. Step 6: Final answer
    x = 7,475.93

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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.