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Finding the Fourth Proportional to 90,492.36, 124,797.63 and 56,503.95

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Solution

The fourth proportional to 90,492.36, 124,797.63 and 56,503.95 is: 77,924.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,492.36 : 124,797.63 = 56,503.95 : x
  2. Step 2: Convert to fraction form
    90,492.36/124,797.63 = 56,503.95/x
  3. Step 3: Cross multiply
    90,492.36x = 124,797.63 × 56,503.95
  4. Step 4: Simplify right side
    90,492.36x = 7,051,559,045.64
  5. Step 5: Solve for x
    x = 7,051,559,045.64/90,492.36
  6. Step 6: Final answer
    x = 77,924.36

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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.