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Finding the Fourth Proportional to 112,503.58, 155,254.95 and 61,521.01

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Solution

The fourth proportional to 112,503.58, 155,254.95 and 61,521.01 is: 84,899.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,503.58 : 155,254.95 = 61,521.01 : x
  2. Step 2: Convert to fraction form
    112,503.58/155,254.95 = 61,521.01/x
  3. Step 3: Cross multiply
    112,503.58x = 155,254.95 × 61,521.01
  4. Step 4: Simplify right side
    112,503.58x = 9,551,440,943.36
  5. Step 5: Solve for x
    x = 9,551,440,943.36/112,503.58
  6. Step 6: Final answer
    x = 84,899.00

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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.