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Finding the Fourth Proportional to 523,875.60, 785,813.40 and 418,899.60

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Solution

The fourth proportional to 523,875.60, 785,813.40 and 418,899.60 is: 628,349.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,875.60 : 785,813.40 = 418,899.60 : x
  2. Step 2: Convert to fraction form
    523,875.60/785,813.40 = 418,899.60/x
  3. Step 3: Cross multiply
    523,875.60x = 785,813.40 × 418,899.60
  4. Step 4: Simplify right side
    523,875.60x = 329,176,918,934.64
  5. Step 5: Solve for x
    x = 329,176,918,934.64/523,875.60
  6. Step 6: Final answer
    x = 628,349.40

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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.