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Finding the Fourth Proportional to 90,368.55, 124,752 and 63,534.06

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Solution

The fourth proportional to 90,368.55, 124,752 and 63,534.06 is: 87,707.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,368.55 : 124,752 = 63,534.06 : x
  2. Step 2: Convert to fraction form
    90,368.55/124,752 = 63,534.06/x
  3. Step 3: Cross multiply
    90,368.55x = 124,752 × 63,534.06
  4. Step 4: Simplify right side
    90,368.55x = 7,926,001,053.12
  5. Step 5: Solve for x
    x = 7,926,001,053.12/90,368.55
  6. Step 6: Final answer
    x = 87,707.52

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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.