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Finding the Fourth Proportional to 56,915.63, 78,470.55 and 46,668.91

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Solution

The fourth proportional to 56,915.63, 78,470.55 and 46,668.91 is: 64,343.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,915.63 : 78,470.55 = 46,668.91 : x
  2. Step 2: Convert to fraction form
    56,915.63/78,470.55 = 46,668.91/x
  3. Step 3: Cross multiply
    56,915.63x = 78,470.55 × 46,668.91
  4. Step 4: Simplify right side
    56,915.63x = 3,662,134,643.25
  5. Step 5: Solve for x
    x = 3,662,134,643.25/56,915.63
  6. Step 6: Final answer
    x = 64,343.22

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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.