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Finding the Fourth Proportional to 523,388.40, 785,140.20 and 191,036.40

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Solution

The fourth proportional to 523,388.40, 785,140.20 and 191,036.40 is: 286,575.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,388.40 : 785,140.20 = 191,036.40 : x
  2. Step 2: Convert to fraction form
    523,388.40/785,140.20 = 191,036.40/x
  3. Step 3: Cross multiply
    523,388.40x = 785,140.20 × 191,036.40
  4. Step 4: Simplify right side
    523,388.40x = 149,990,357,303.28
  5. Step 5: Solve for x
    x = 149,990,357,303.28/523,388.40
  6. Step 6: Final answer
    x = 286,575.62

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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.