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Finding the Fourth Proportional to 425,160.40, 586,762.80 and 317,543.68

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Solution

The fourth proportional to 425,160.40, 586,762.80 and 317,543.68 is: 438,241.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,160.40 : 586,762.80 = 317,543.68 : x
  2. Step 2: Convert to fraction form
    425,160.40/586,762.80 = 317,543.68/x
  3. Step 3: Cross multiply
    425,160.40x = 586,762.80 × 317,543.68
  4. Step 4: Simplify right side
    425,160.40x = 186,322,818,799.10
  5. Step 5: Solve for x
    x = 186,322,818,799.10/425,160.40
  6. Step 6: Final answer
    x = 438,241.24

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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.