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Finding the Fourth Proportional to 749,069.10, 1,123,603.65 and 749,069.10

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Solution

The fourth proportional to 749,069.10, 1,123,603.65 and 749,069.10 is: 1,123,603.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,069.10 : 1,123,603.65 = 749,069.10 : x
  2. Step 2: Convert to fraction form
    749,069.10/1,123,603.65 = 749,069.10/x
  3. Step 3: Cross multiply
    749,069.10x = 1,123,603.65 × 749,069.10
  4. Step 4: Simplify right side
    749,069.10x = 841,656,774,862.22
  5. Step 5: Solve for x
    x = 841,656,774,862.22/749,069.10
  6. Step 6: Final answer
    x = 1,123,603.65

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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.