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Finding the Fourth Proportional to 74,705.60, 112,058.40 and 53,710.40

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Solution

The fourth proportional to 74,705.60, 112,058.40 and 53,710.40 is: 80,565.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,705.60 : 112,058.40 = 53,710.40 : x
  2. Step 2: Convert to fraction form
    74,705.60/112,058.40 = 53,710.40/x
  3. Step 3: Cross multiply
    74,705.60x = 112,058.40 × 53,710.40
  4. Step 4: Simplify right side
    74,705.60x = 6,018,701,487.36
  5. Step 5: Solve for x
    x = 6,018,701,487.36/74,705.60
  6. Step 6: Final answer
    x = 80,565.60

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1.5x scale

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.