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Finding the Fourth Proportional to 93,272.80, 139,909.20 and 53,809.60

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Solution

The fourth proportional to 93,272.80, 139,909.20 and 53,809.60 is: 80,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,272.80 : 139,909.20 = 53,809.60 : x
  2. Step 2: Convert to fraction form
    93,272.80/139,909.20 = 53,809.60/x
  3. Step 3: Cross multiply
    93,272.80x = 139,909.20 × 53,809.60
  4. Step 4: Simplify right side
    93,272.80x = 7,528,458,088.32
  5. Step 5: Solve for x
    x = 7,528,458,088.32/93,272.80
  6. Step 6: Final answer
    x = 80,714.40

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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.