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Finding the Fourth Proportional to 621,034.40, 931,551.60 and 621,034.40

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Solution

The fourth proportional to 621,034.40, 931,551.60 and 621,034.40 is: 931,551.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,034.40 : 931,551.60 = 621,034.40 : x
  2. Step 2: Convert to fraction form
    621,034.40/931,551.60 = 621,034.40/x
  3. Step 3: Cross multiply
    621,034.40x = 931,551.60 × 621,034.40
  4. Step 4: Simplify right side
    621,034.40x = 578,525,588,975.04
  5. Step 5: Solve for x
    x = 578,525,588,975.04/621,034.40
  6. Step 6: Final answer
    x = 931,551.60

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Half scale
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Double scale
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Similar ratio
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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.