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Finding the Fourth Proportional to 623,449.24, 933,689.40 and 398,111.68

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Solution

The fourth proportional to 623,449.24, 933,689.40 and 398,111.68 is: 596,219.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,449.24 : 933,689.40 = 398,111.68 : x
  2. Step 2: Convert to fraction form
    623,449.24/933,689.40 = 398,111.68/x
  3. Step 3: Cross multiply
    623,449.24x = 933,689.40 × 398,111.68
  4. Step 4: Simplify right side
    623,449.24x = 371,712,655,632.19
  5. Step 5: Solve for x
    x = 371,712,655,632.19/623,449.24
  6. Step 6: Final answer
    x = 596,219.60

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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.