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Finding the Fourth Proportional to 907,276.80, 1,360,915.20 and 374,620.80

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Solution

The fourth proportional to 907,276.80, 1,360,915.20 and 374,620.80 is: 561,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,276.80 : 1,360,915.20 = 374,620.80 : x
  2. Step 2: Convert to fraction form
    907,276.80/1,360,915.20 = 374,620.80/x
  3. Step 3: Cross multiply
    907,276.80x = 1,360,915.20 × 374,620.80
  4. Step 4: Simplify right side
    907,276.80x = 509,827,140,956.16
  5. Step 5: Solve for x
    x = 509,827,140,956.16/907,276.80
  6. Step 6: Final answer
    x = 561,931.20

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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.