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Finding the Fourth Proportional to 528,036.40, 741,117.20 and 528,036.40

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Solution

The fourth proportional to 528,036.40, 741,117.20 and 528,036.40 is: 741,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,036.40 : 741,117.20 = 528,036.40 : x
  2. Step 2: Convert to fraction form
    528,036.40/741,117.20 = 528,036.40/x
  3. Step 3: Cross multiply
    528,036.40x = 741,117.20 × 528,036.40
  4. Step 4: Simplify right side
    528,036.40x = 391,336,858,266.08
  5. Step 5: Solve for x
    x = 391,336,858,266.08/528,036.40
  6. Step 6: Final answer
    x = 741,117.20

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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.