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Finding the Fourth Proportional to 623,904.10, 935,856.15 and 340,468.90

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Solution

The fourth proportional to 623,904.10, 935,856.15 and 340,468.90 is: 510,703.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,904.10 : 935,856.15 = 340,468.90 : x
  2. Step 2: Convert to fraction form
    623,904.10/935,856.15 = 340,468.90/x
  3. Step 3: Cross multiply
    623,904.10x = 935,856.15 × 340,468.90
  4. Step 4: Simplify right side
    623,904.10x = 318,629,913,948.74
  5. Step 5: Solve for x
    x = 318,629,913,948.74/623,904.10
  6. Step 6: Final answer
    x = 510,703.35

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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.