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Finding the Fourth Proportional to 99,643.60, 149,263.80 and 62,088.40

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Solution

The fourth proportional to 99,643.60, 149,263.80 and 62,088.40 is: 93,006.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,643.60 : 149,263.80 = 62,088.40 : x
  2. Step 2: Convert to fraction form
    99,643.60/149,263.80 = 62,088.40/x
  3. Step 3: Cross multiply
    99,643.60x = 149,263.80 × 62,088.40
  4. Step 4: Simplify right side
    99,643.60x = 9,267,550,519.92
  5. Step 5: Solve for x
    x = 9,267,550,519.92/99,643.60
  6. Step 6: Final answer
    x = 93,006.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.