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Finding the Fourth Proportional to 111,333.60, 153,465.84 and 84,368.16

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Solution

The fourth proportional to 111,333.60, 153,465.84 and 84,368.16 is: 116,295.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,333.60 : 153,465.84 = 84,368.16 : x
  2. Step 2: Convert to fraction form
    111,333.60/153,465.84 = 84,368.16/x
  3. Step 3: Cross multiply
    111,333.60x = 153,465.84 × 84,368.16
  4. Step 4: Simplify right side
    111,333.60x = 12,947,630,543.65
  5. Step 5: Solve for x
    x = 12,947,630,543.65/111,333.60
  6. Step 6: Final answer
    x = 116,295.80

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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.