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Finding the Fourth Proportional to 71,045.61, 98,036.72 and 45,506.91

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Solution

The fourth proportional to 71,045.61, 98,036.72 and 45,506.91 is: 62,795.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,045.61 : 98,036.72 = 45,506.91 : x
  2. Step 2: Convert to fraction form
    71,045.61/98,036.72 = 45,506.91/x
  3. Step 3: Cross multiply
    71,045.61x = 98,036.72 × 45,506.91
  4. Step 4: Simplify right side
    71,045.61x = 4,461,348,193.74
  5. Step 5: Solve for x
    x = 4,461,348,193.74/71,045.61
  6. Step 6: Final answer
    x = 62,795.55

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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.