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Finding the Fourth Proportional to 525,083.94, 724,400.10 and 389,451.60

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Solution

The fourth proportional to 525,083.94, 724,400.10 and 389,451.60 is: 537,283.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,083.94 : 724,400.10 = 389,451.60 : x
  2. Step 2: Convert to fraction form
    525,083.94/724,400.10 = 389,451.60/x
  3. Step 3: Cross multiply
    525,083.94x = 724,400.10 × 389,451.60
  4. Step 4: Simplify right side
    525,083.94x = 282,118,777,985.16
  5. Step 5: Solve for x
    x = 282,118,777,985.16/525,083.94
  6. Step 6: Final answer
    x = 537,283.20

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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.