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Finding the Fourth Proportional to 935,901.40, 1,403,852.10 and 817,803.40

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Solution

The fourth proportional to 935,901.40, 1,403,852.10 and 817,803.40 is: 1,226,705.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,901.40 : 1,403,852.10 = 817,803.40 : x
  2. Step 2: Convert to fraction form
    935,901.40/1,403,852.10 = 817,803.40/x
  3. Step 3: Cross multiply
    935,901.40x = 1,403,852.10 × 817,803.40
  4. Step 4: Simplify right side
    935,901.40x = 1,148,075,020,477.14
  5. Step 5: Solve for x
    x = 1,148,075,020,477.14/935,901.40
  6. Step 6: Final answer
    x = 1,226,705.10

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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.