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Finding the Fourth Proportional to 623,613.60, 936,111.60 and 387,223.20

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Solution

The fourth proportional to 623,613.60, 936,111.60 and 387,223.20 is: 581,263.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,613.60 : 936,111.60 = 387,223.20 : x
  2. Step 2: Convert to fraction form
    623,613.60/936,111.60 = 387,223.20/x
  3. Step 3: Cross multiply
    623,613.60x = 936,111.60 × 387,223.20
  4. Step 4: Simplify right side
    623,613.60x = 362,484,129,309.12
  5. Step 5: Solve for x
    x = 362,484,129,309.12/623,613.60
  6. Step 6: Final answer
    x = 581,263.99

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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.