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Finding the Fourth Proportional to 99,437.94, 137,193.42 and 56,410.32

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Solution

The fourth proportional to 99,437.94, 137,193.42 and 56,410.32 is: 77,828.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,437.94 : 137,193.42 = 56,410.32 : x
  2. Step 2: Convert to fraction form
    99,437.94/137,193.42 = 56,410.32/x
  3. Step 3: Cross multiply
    99,437.94x = 137,193.42 × 56,410.32
  4. Step 4: Simplify right side
    99,437.94x = 7,739,124,724.09
  5. Step 5: Solve for x
    x = 7,739,124,724.09/99,437.94
  6. Step 6: Final answer
    x = 77,828.69

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1.5x scale

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.