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Finding the Fourth Proportional to 118,354.50, 163,287.14 and 69,946.16

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Solution

The fourth proportional to 118,354.50, 163,287.14 and 69,946.16 is: 96,500.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,354.50 : 163,287.14 = 69,946.16 : x
  2. Step 2: Convert to fraction form
    118,354.50/163,287.14 = 69,946.16/x
  3. Step 3: Cross multiply
    118,354.50x = 163,287.14 × 69,946.16
  4. Step 4: Simplify right side
    118,354.50x = 11,421,307,254.22
  5. Step 5: Solve for x
    x = 11,421,307,254.22/118,354.50
  6. Step 6: Final answer
    x = 96,500.83

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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.